Index: main/kernel/resources/js/Ametys/relation/dd/AmetysTreeViewDropZone.js
===================================================================
--- main/kernel/resources/js/Ametys/relation/dd/AmetysTreeViewDropZone.js	(revision 31757)
+++ main/kernel/resources/js/Ametys/relation/dd/AmetysTreeViewDropZone.js	(working copy)
@@ -117,6 +117,9 @@
 			this.setAmetysDropZoneInfos(this.overRecord != null ? [this.overRecord] : [], data);
 		}
 		
+		this.el.removeCls(this.overClass);
+		this.el.removeCls(this.overSelectionClass);
+		
 		this.callParent(arguments);
 	}
 });