diff -r 07239de796bb -r e756a8c72c3d cms/drupal/modules/taxonomy/taxonomy.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cms/drupal/modules/taxonomy/taxonomy.js	Fri Sep 08 12:04:06 2017 +0200
@@ -0,0 +1,40 @@
+(function ($) {
+
+/**
+ * Move a block in the blocks table from one region to another via select list.
+ *
+ * This behavior is dependent on the tableDrag behavior, since it uses the
+ * objects initialized in that behavior to update the row.
+ */
+Drupal.behaviors.termDrag = {
+  attach: function (context, settings) {
+    var table = $('#taxonomy', context);
+    var tableDrag = Drupal.tableDrag.taxonomy; // Get the blocks tableDrag object.
+    var rows = $('tr', table).length;
+
+    // When a row is swapped, keep previous and next page classes set.
+    tableDrag.row.prototype.onSwap = function (swappedRow) {
+      $('tr.taxonomy-term-preview', table).removeClass('taxonomy-term-preview');
+      $('tr.taxonomy-term-divider-top', table).removeClass('taxonomy-term-divider-top');
+      $('tr.taxonomy-term-divider-bottom', table).removeClass('taxonomy-term-divider-bottom');
+
+      if (settings.taxonomy.backStep) {
+        for (var n = 0; n < settings.taxonomy.backStep; n++) {
+          $(table[0].tBodies[0].rows[n]).addClass('taxonomy-term-preview');
+        }
+        $(table[0].tBodies[0].rows[settings.taxonomy.backStep - 1]).addClass('taxonomy-term-divider-top');
+        $(table[0].tBodies[0].rows[settings.taxonomy.backStep]).addClass('taxonomy-term-divider-bottom');
+      }
+
+      if (settings.taxonomy.forwardStep) {
+        for (var n = rows - settings.taxonomy.forwardStep - 1; n < rows - 1; n++) {
+          $(table[0].tBodies[0].rows[n]).addClass('taxonomy-term-preview');
+        }
+        $(table[0].tBodies[0].rows[rows - settings.taxonomy.forwardStep - 2]).addClass('taxonomy-term-divider-top');
+        $(table[0].tBodies[0].rows[rows - settings.taxonomy.forwardStep - 1]).addClass('taxonomy-term-divider-bottom');
+      }
+    };
+  }
+};
+
+})(jQuery);