diff --git a/Phraseanet-production-client/src/components/thesaurus/index.js b/Phraseanet-production-client/src/components/thesaurus/index.js
index 8778e4350e..7638a52e34 100644
--- a/Phraseanet-production-client/src/components/thesaurus/index.js
+++ b/Phraseanet-production-client/src/components/thesaurus/index.js
@@ -16,6 +16,12 @@ const thesaurusService = services => {
 
     let dragging = false;       // true when an object is dragged over the th zone
     let dragTarget = null;      // the target where the mouse is over
+    let dragUniqueSbid = null;  // will end-up as : null (nothing dragged) ; false (many sbids) ; sbid (same sbid for all)
+    let dragLstRecords = ''     // list or records, format as expected for RecordsRequest::fromRequest
+    const url = configService.get('baseUrl');
+
+    let searchSelection = {asArray: [], serialized: ''};
+
 
     const initialize = params => {
         let { $container } = params;
@@ -105,6 +111,18 @@ const thesaurusService = services => {
         $('#THPD_T_tree')
             .droppable({
                 accept: function(elem) {
+                    let lstbr = searchSelection.asArray;
+                    console.log("lstbr", lstbr);
+
+                    dragUniqueSbid = null;
+                    lstbr.forEach(sbid_rid => {
+                        sbid_rid = sbid_rid.split('_');
+                        let sbid = sbid_rid[0];
+                        let rid = sbid_rid[1];
+                        dragUniqueSbid = (dragUniqueSbid===null) ? sbid : (sbid===dragUniqueSbid ? sbid : false);
+                    });
+                    dragLstRecords = lstbr.join(';');   // a list as expected for RecordsRequest::fromRequest
+
                     $(this).removeClass('draggingOver');
                     console.log("accept", elem);
                     // if ($(elem).hasClass('grouping') && !$(elem).hasClass('SSTT')) {
@@ -115,15 +133,37 @@ const thesaurusService = services => {
 
                     // the th zone can accet drags only when in front (activated tab)
                     // 'hash' is set by the 'workzone' js code.
-                    return $('#idFrameC .tabs').data('hash') === '#thesaurus_tab';
+                    // return $('#idFrameC .tabs').data('hash') === '#thesaurus_tab';
+
+                    if($('#idFrameC .tabs').data('hash') !== '#thesaurus_tab') {
+                        return false;   // can't drop on th if the th tab is not front
+                    }
+
+                    // by using classes on both main container AND the (unique) acceptable thesaurus zone
+                    // we can have custom drag/drop css for both ok / reject
+                    $('#THPD_T_tree', $container).removeClass('draggingOver');      // the container
+                    $('#THPD_T_tree>LI', $container).removeClass('draggingOver');   // all thesaurus
+
+                    if(dragUniqueSbid === null || dragUniqueSbid === false) {
+                        // many sbids
+                        // return false;    // don't return false, as it will prevent "over" and will not apply css (no "not-allowed" cursor)
+                    }
+
+                    return true;
                 },
                 scope: 'objects',
                 hoverClass: 'groupDrop',
                 tolerance: 'pointer',
                 over: function(event, ui) {
-                    $(this).addClass('draggingOver');
                     console.log("over", event, ui, event.toElement);
 
+                    $('#THPD_T_tree', $container).addClass('draggingOver');
+                    if(dragUniqueSbid !== null && dragUniqueSbid !== false) {
+                        $('#TX_P\\.'+dragUniqueSbid+'\\.T', $container).addClass('draggingOver');
+                    }
+                    /*
+                    $(this).addClass('draggingOver');
+
                     if(dragTarget) {
                         // something was already hilighted (should no happen)
                         dragTarget.removeClass('dragOver');
@@ -139,28 +179,50 @@ const thesaurusService = services => {
                         dragTarget.addClass('dragOver');
                         console.log("IN : " + dragTarget.attr('id'));
                     }
+                    */
                 },
                 out: function(event, ui) {
-                    $(this).removeClass('draggingOver');
                     console.log("out", event, ui, event.toElement);
+                    $('#THPD_T_tree', $container).removeClass('draggingOver');
+                    $('#THPD_T_tree>LI', $container).removeClass('draggingOver');
+                    /*
+                    $(this).removeClass('draggingOver');
                     if(dragTarget) {
                         // something was hilighted
                         dragTarget.removeClass('dragOver');
                     }
                     dragging = false;    // == no more dragging something over th
                     dragTarget = null;
+
+                     */
                 },
                 drop: (event, ui) => {
-                    $(this).removeClass('draggingOver');
                     console.log("drop", event, ui);
-                    if(dragTarget) {
-                        // const tid = $(event.toElement).data('tx_term_id');
-                        console.log("DROP ON id=" + dragTarget.attr('id'));
-                        dragTarget.removeClass('dragOver');
-//                        appEvents.emit('searchAdvancedForm.activateDatabase', { databases: [sbid] });
+                    $('#THPD_T_tree', $container).removeClass('draggingOver');
+                    $('#THPD_T_tree>LI', $container).removeClass('draggingOver');
+
+                    const target = $(event.toElement);
+                    const sbas_id = target.data('sbas_id').toString();         // set on html by ThesaurusXmlHttpController.php
+                    const tx_term_id = target.data('tx_term_id').toString();   // set on html by ThesaurusXmlHttpController.php
+
+                    if(sbas_id === dragUniqueSbid) {
+                        dropRecordsOnTerm(sbas_id, tx_term_id, dragLstRecords);
                     }
-                    dragging = false;    // == no more dragging something over th
-                    dragTarget = null;
+
+
+
+                        /*
+                        $(this).removeClass('draggingOver');
+                        if(dragTarget) {
+                            // const tid = $(event.toElement).data('tx_term_id');
+                            console.log("DROP ON id=" + dragTarget.attr('id'));
+                            dragTarget.removeClass('dragOver');
+    //                        appEvents.emit('searchAdvancedForm.activateDatabase', { databases: [sbid] });
+                        }
+                        dragging = false;    // == no more dragging something over th
+                        dragTarget = null;
+
+                         */
                 }
             })
             // track the mouse
@@ -194,6 +256,57 @@ const thesaurusService = services => {
         searchValue = _.debounce(searchValue, 300);
     };
 
+
+
+    function dropRecordsOnTerm(sbas_id, tx_term_id, lstRecords) {
+        let dlg = dialog.create(
+            services,
+            {
+                size: 'Custom',
+                customWidth: 770,
+                customHeight: 400,
+                title: localeService.t('add data'),
+                loading: true
+            },
+            0
+        );
+        // dlg.setContent("");
+
+        // let parms = {
+        //     url: '/thesaurus/drop_records.php',
+        //     data: {
+        //         'sbas_id': sbas_id,
+        //         'tx_term_id': tx_term_id,
+        //         'lst': lstRecords
+        //     },
+        //     async: true,
+        //     cache: false,
+        //     dataType: 'json',
+        //     // timeout: 10 * 60 * 1000, // 10 minutes !
+        //     success: function (result, textStatus) {
+        //         dlg.setContent(result);
+        //     }
+        // };
+
+        $.get(
+            `${url}prod/thesaurus/droprecords`,
+            {
+                'dlg_level': 0,
+                'sbas_id': sbas_id,
+                'tx_term_id': tx_term_id,
+                'lst': lstRecords
+            },
+            function (data, textStatus) {
+                dlg.setContent(data);
+            }
+        );
+    }
+
+
+
+
+
+
     function show() {
         // first show of thesaurus
         if (options.currentWizard === '???') {
@@ -1462,6 +1575,13 @@ const thesaurusService = services => {
         });
     }
 
+    appEvents.listenAll({
+        'broadcast.searchResultSelection': (selection) => {
+            searchSelection = selection;
+        }
+    });
+
+
     return { initialize, show };
 };
 
diff --git a/Phraseanet-production-client/src/skins/style/ui-components/_workzone-thesaurus.scss b/Phraseanet-production-client/src/skins/style/ui-components/_workzone-thesaurus.scss
index bf70671e29..0a12244db4 100644
--- a/Phraseanet-production-client/src/skins/style/ui-components/_workzone-thesaurus.scss
+++ b/Phraseanet-production-client/src/skins/style/ui-components/_workzone-thesaurus.scss
@@ -189,10 +189,25 @@ dans l'onglet thesaurus : arbres, menus contextuels
 }
 
 #THPD_T_tree.draggingOver {
+    //background-color: #FF0000;
     /* something is currently dragged over, we change some hover */
+    &:hover {
+        cursor: not-allowed;
+    }
     span.tx_term:hover {
-        background-color: $highlightBackgroundColor;
-        color: $highlightTextColor;
+        color: $mediumTextColor;    // no more highlight
+        cursor: not-allowed;
+    }
+    LI.draggingOver {
+        //background-color: #00FF00;
+        &:hover {
+            cursor: default;
+        }
+        span.tx_term:hover {
+            background-color: $highlightBackgroundColor;
+            color: $highlightTextColor;
+            cursor: copy;
+        }
     }
 }
 
diff --git a/lib/Alchemy/Phrasea/Application/RouteLoader.php b/lib/Alchemy/Phrasea/Application/RouteLoader.php
index 426b4f0003..ed6f4a15af 100644
--- a/lib/Alchemy/Phrasea/Application/RouteLoader.php
+++ b/lib/Alchemy/Phrasea/Application/RouteLoader.php
@@ -65,6 +65,7 @@ class RouteLoader
         '/prod/share/'                 => Providers\Prod\Share::class,
         '/prod/story'                  => Providers\Prod\Story::class,
         '/prod/subdefs'                => Providers\Prod\Subdefs::class,
+        '/prod/thesaurus/'             => Providers\Prod\Thesaurus::class,
         '/prod/tools/'                 => Providers\Prod\Tools::class,
         '/prod/tooltip'                => Providers\Prod\Tooltip::class,
         '/prod/TOU/'                   => Providers\Prod\TOU::class,
diff --git a/lib/Alchemy/Phrasea/Controller/Prod/ThesaurusController.php b/lib/Alchemy/Phrasea/Controller/Prod/ThesaurusController.php
new file mode 100644
index 0000000000..74538141c5
--- /dev/null
+++ b/lib/Alchemy/Phrasea/Controller/Prod/ThesaurusController.php
@@ -0,0 +1,138 @@
+<?php
+/*
+ * This file is part of Phraseanet
+ *
+ * (c) 2005-2016 Alchemy
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace Alchemy\Phrasea\Controller\Prod;
+
+use Alchemy\Phrasea\Application\Helper\DataboxLoggerAware;
+use Alchemy\Phrasea\Application\Helper\DispatcherAware;
+use Alchemy\Phrasea\Application\Helper\FilesystemAware;
+use Alchemy\Phrasea\Controller\Controller;
+use Alchemy\Phrasea\Controller\RecordsRequest;
+use DOMElement;
+use DOMXPath;
+use Exception;
+use Symfony\Component\HttpFoundation\Request;
+
+class ThesaurusController extends Controller
+{
+    use DataboxLoggerAware;
+    use DispatcherAware;
+    use FilesystemAware;
+
+    public function dropRecordsAction(Request $request): string
+    {
+        $sbas_id = $request->get('sbas_id');
+        $tx_term_id = $request->get('tx_term_id');
+        $records = RecordsRequest::fromRequest($this->app, $request, false);
+
+        // twig parameters
+        $twp = [
+            'error'     => null,
+            'dlg_level' => $request->get('dlg_level'),
+            //    'fields' => [],    // fields the can receive the value
+            //    'fvalue' => 'Europe',
+            'up_paths'  => [],
+        ];
+
+        // find which field(s) can be updated, that is what tbranches are linked to a parent of the term
+
+        try {
+            $dbox = $this->app->getApplicationBox()->get_databox($sbas_id);
+
+            if (!($domth = $dbox->get_dom_thesaurus())) {
+                throw new Exception("error fetching th");
+            }
+
+            $upPaths = [];
+            $xpath = new DOMXPath($domth);
+            foreach ($dbox->get_meta_structure() as $field) {
+                if (!($q = $field->get_tbranch())) {
+                    continue;
+                }
+                $fieldName = $field->get_name();
+                $roots = $xpath->query($q);     // linked nodes for this field
+                $q = '(' . $q . ')//sy[@id=\'' . $tx_term_id . '\']';   // can we find the term under the tbranch(es) ?
+                // normally we should find only one linked parent, since we search from a unique term
+                // ...but... a bad th could link a field onto 2 points of the same branch :
+                // root
+                //   |---A        <-- "keyword" is linked here...
+                //       |---B    <-- ...but also linked here (bad idea btw)
+                //           |---terms
+                // going up, we decide to stop at the first link (B) (easier)
+                if (($droppedSy = $xpath->query($q))->length > 0) {
+                    // yes (and since the query targets a unique id, there is only one result)
+                    $droppedSy = $droppedSy->item(0);
+                    /** @var DOMElement $droppedSy */
+                    $droppedlng = $droppedSy->getAttribute('lng');    // the lng of the dropped term is prefered
+
+                    // go from the sy upto a linked branch (possibly multiples if the field is linked to many branches)
+
+                    $ok = true;     // == the term (level up-to top) can populate the current field
+                    for ($te = $droppedSy->parentNode; $te->nodeType === XML_ELEMENT_NODE; $te = $te->parentNode) {
+                        /** @var DOMElement $te */
+                        $teid = $te->getAttribute('id');
+                        for ($i = 0; $i < $roots->length; $i++) {
+                            if ($te->isSameNode($roots->item($i))) {
+                                $ok = false;    // we met the link point, upmost terms are not "values" anymore
+                            }
+                        }
+                        if ($ok) {       // acceptable value for the current field
+                            if (!array_key_exists($teid, $upPaths)) {
+                                $upPaths[$teid] = [
+                                    'synonyms' => [],
+                                    'fields'   => []
+                                ];
+                                // get all the sy so the user can choose which is prefered
+                                $preferedId = null;
+                                foreach ($te->childNodes as $sy) {
+                                    if ($sy->nodeName != 'sy') {
+                                        continue;   // skip 'te' children
+                                    }
+                                    $lng = $sy->getAttribute('lng');
+                                    $id = $sy->getAttribute('id');
+                                    $s = [
+                                        'value'    => $sy->getAttribute('v'),
+                                        'lng'      => $lng,
+                                        'selected' => false
+                                    ];
+                                    // this sy is prefered if...
+                                    if ($sy->getAttribute('lng') === $droppedlng) {
+                                        $preferedId = $id;     // ... it has the same lng as the dropped
+                                    }
+                                    if ($sy->isSameNode($droppedSy)) {
+                                        $preferedId = $id;     // ... better : it was the dropped target
+                                    }
+                                    $upPaths[$teid]['synonyms'][$id] = $s;
+                                }
+                                if ($preferedId) {
+                                    $upPaths[$teid]['synonyms'][$preferedId]['selected'] = true;
+                                }
+                            }
+                            $upPaths[$teid]['fields'][$field->get_id()] = $field;
+                        }
+                    }
+                    $twp['up_paths'] = array_reverse($upPaths);
+                    $twp['fields'][] = $field;
+                    // $field->
+                }
+            }
+
+            if (empty($upPaths)) {
+                // no fields (could happen if one drops on a top-level branch, or if the th is not linked, or...)
+                throw new Exception("this branch is not linked");
+            }
+
+        }
+        catch (Exception $e) {
+            $twp['error'] = $e->getMessage();
+        }
+
+        return $this->render('prod/Thesaurus/droppedrecords.html.twig', $twp);
+    }
+}
diff --git a/lib/Alchemy/Phrasea/ControllerProvider/ControllerProviderServiceProvider.php b/lib/Alchemy/Phrasea/ControllerProvider/ControllerProviderServiceProvider.php
index 6eac03e8d5..f91484c5a5 100644
--- a/lib/Alchemy/Phrasea/ControllerProvider/ControllerProviderServiceProvider.php
+++ b/lib/Alchemy/Phrasea/ControllerProvider/ControllerProviderServiceProvider.php
@@ -87,6 +87,7 @@ class ControllerProviderServiceProvider implements ServiceProviderInterface
             Prod\Share::class => [],
             Prod\Story::class => [],
             Prod\Subdefs::class => [],
+            Prod\Thesaurus::class => [],
             Prod\Tools::class => [],
             Prod\Tooltip::class => [],
             Prod\TOU::class => [],
diff --git a/lib/Alchemy/Phrasea/ControllerProvider/Prod/Thesaurus.php b/lib/Alchemy/Phrasea/ControllerProvider/Prod/Thesaurus.php
new file mode 100644
index 0000000000..e98bf994ce
--- /dev/null
+++ b/lib/Alchemy/Phrasea/ControllerProvider/Prod/Thesaurus.php
@@ -0,0 +1,55 @@
+<?php
+
+/*
+ * This file is part of Phraseanet
+ *
+ * (c) 2005-2016 Alchemy
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Alchemy\Phrasea\ControllerProvider\Prod;
+
+use Alchemy\Phrasea\Application as PhraseaApplication;
+use Alchemy\Phrasea\Controller\Prod\ThesaurusController;
+use Alchemy\Phrasea\ControllerProvider\ControllerProviderTrait;
+use Alchemy\Phrasea\Core\LazyLocator;
+use Silex\Application;
+use Silex\ControllerProviderInterface;
+use Silex\ServiceProviderInterface;
+
+class Thesaurus implements ControllerProviderInterface, ServiceProviderInterface
+{
+    use ControllerProviderTrait;
+
+    public function register(Application $app)
+    {
+        $app['controller.prod.thesaurus'] = $app->share(function (PhraseaApplication $app) {
+            return (new ThesaurusController($app))
+                ->setDataboxLoggerLocator($app['phraseanet.logger'])
+                ->setDispatcher($app['dispatcher'])
+                ->setFileSystemLocator(new LazyLocator($app, 'filesystem'))
+            ;
+        });
+    }
+
+    public function boot(Application $app)
+    {
+        // no-op
+    }
+
+    public function connect(Application $app)
+    {
+        $controllers = $this->createAuthenticatedCollection($app);
+//        $firewall = $this->getFirewall($app);
+
+//        $controllers->before(function () use ($firewall) {
+//            $firewall->requireRight(\ACL::CANMODIFRECORD);
+//        });
+
+        $controllers->get('/droprecords', 'controller.prod.thesaurus:dropRecordsAction');
+
+        return $controllers;
+    }
+}
diff --git a/templates/web/prod/Thesaurus/droppedrecords.html.twig b/templates/web/prod/Thesaurus/droppedrecords.html.twig
new file mode 100644
index 0000000000..0e1006725b
--- /dev/null
+++ b/templates/web/prod/Thesaurus/droppedrecords.html.twig
@@ -0,0 +1,122 @@
+{% if error %}
+    {{ error }}
+{% else %}
+    <form id="DroppedOnTH_form">
+        <table>
+            <tr>
+                <th>set value</th>
+                <th/>
+                <th>to field</th>
+                <th class="multiTitle" style="display: none">multi</th>
+            </tr>
+        {% if up_paths|length > 1 %}
+            <tr class="toggleMoreFields">
+                <td colspan="4">
+                    <button>+</button>&nbsp;Other value(s)...
+                </td>
+            </tr>
+        {% endif %}
+        {% set n=1 %}
+        {% for tid,up_path in up_paths %}
+            {% set cl = (n == up_paths|length) ? "" : "class='other' style='display:none'"%}
+            <tr {{ cl|raw }}>
+                <td>
+                    {% if 0 and up_path.synonyms|length == 1 %}
+                        {% set synonym = up_path.synonyms|first %}
+                        <option {{ synonym.selected ? "selected" : "" }}>{{ synonym.value }}</option>
+                    {% else %}
+                    <select>
+                    {% for synonym in up_path.synonyms %}
+                        <option {{ synonym.selected ? "selected" : "" }}>{{ synonym.value }}</option>
+                    {% endfor%}
+                    </select>
+                    {% endif %}
+                </td>
+                <td style="alignment: center; font-size: xx-large">
+                    &rarr;
+                </td>
+                <td>
+                    <select class="fieldSelect" data-n="{{ n }}">
+                        {% set sel="" %}
+                        {% if n == up_paths|length %}
+                            <option data-multi="0">select...</option>
+                            {% if up_path.fields|length == 1 %}
+                                {% set sel="selected" %}
+                            {% endif %}
+                        {% else %}
+                            <option data-multi="0">none</option>
+                        {% endif %}
+                        {% for field in up_path.fields  %}
+                            <option {{ sel }} data-multi="{{ field.is_multi() ? 1 : 0 }}">{{ field.get_name() }}</option>
+                        {% endfor %}
+                    </select>
+                </td>
+                <td class="multiRadio _{{ n }}" style="padding-left:10px; display: none">
+                    <input type="radio" checked>&nbsp;add
+                    &nbsp;&nbsp;
+                    <input type="radio">&nbsp;replace
+                </td>
+            </tr>
+            {% set n = n+1 %}
+        {% endfor %}
+
+        </table>
+    </form>
+{% endif %}
+
+<script type="application/javascript">
+    let $container = $('#DroppedOnTH_form');
+
+    let dlg = dialog.get({{ dlg_level }});
+    dlg.setOption("buttons",
+        [
+            {
+                text: "Ok",
+                click: function() {
+                    $( this ).dialog( "close" );
+                }
+            },
+            {
+                text: "Cancel",
+                click: function() {
+                    $( this ).dialog( "close" );
+                }
+            }
+        ]
+    );
+
+
+    /**
+     * when a destination field is selected, show/hide the "multi" radio
+     */
+    $(' .fieldSelect', $container)
+        .change(function (event) {
+            let select = $(this);
+            let n = select.data('n');
+            console.log(n);
+            if( $('option:eq(' + select.prop('selectedIndex') + ')', select).data('multi') ) {
+                // this select is on a multi-valued field
+                $(' .multiRadio._'+n, $container).show();
+            }
+            else {
+                // this select is on a mono-valued field
+                $(' .multiRadio._'+n, $container).hide();
+            }
+            // show the column title only if one field is multi
+            if( $(' .multiRadio:visible', $container).length > 0 ) {
+                $(' .multiTitle', $container).show();
+            }
+            else {
+                $(' .multiTitle', $container).hide();
+            }
+        })
+        .change();  // enforce initial update
+
+
+    $(' .toggleMoreFields BUTTON', $container).click(function (event) {
+        $(' .toggleMoreFields', $container).hide();
+        $(' .other').show();
+        return false;
+    })
+
+</script>
\ No newline at end of file
diff --git a/templates/web/thesaurus/thesaurus.html.twig b/templates/web/thesaurus/thesaurus.html.twig
index b384e7c8bb..1ce8830e10 100644
--- a/templates/web/thesaurus/thesaurus.html.twig
+++ b/templates/web/thesaurus/thesaurus.html.twig
@@ -1082,8 +1082,10 @@
                                                             url += "&typ=" + typ;
                                                             url += "&sylng=" + encodeURIComponent(lng);
 
+                                                            var title = typ=="TS" ? "{{ 'thesaurus:: Nouveau terme specifique' | trans }}" : "{{ 'thesaurus:: Nouveau synonyme' | trans }}";
+
                                                           //  w = window.open(url, "NEWTERM", "directories=no, height=290, width=490, location=no, menubar=no, resizable=yes, scrollbars=yes, status=no, toolbar=no");
-                                                            w = loadDataAjax(url,490, 350,"#NEWSY_DLG_CONFIRM",'{% if typ == "TS" %}{{ 'thesaurus:: Nouveau terme specifique' | trans }}{% else %}{{ 'thesaurus:: Nouveau synonyme' | trans }}{% endif %}');
+                                                            w = loadDataAjax(url, 490, 350, "#NEWSY_DLG_CONFIRM", title);
                                                         }
                                                     }
                                                 ],