reset animation source/dest when changing export sets

Author: vkovec

Assets/FbxExporters/Editor/ConvertToPrefabEditorWindow.cs

@@ -30,6 +30,9 @@ public static void Init (IEnumerable<GameObject> toConvert)
             protected void SetGameObjectsToConvert(IEnumerable<GameObject> toConvert){
                 ToExport = toConvert.OrderBy (go => go.name).ToArray ();
 
+                TransferAnimationSource = null;
+                TransferAnimationDest = null;
+
                 if (ToExport.Length == 1) {
                     m_prefabFileName = ToExport [0].name;
 

Assets/FbxExporters/Editor/ExportModelEditorWindow.cs

@@ -432,6 +432,9 @@ public static void Init (IEnumerable<UnityEngine.Object> toExport, string filena
             protected int SetGameObjectsToExport(IEnumerable<UnityEngine.Object> toExport){
                 ToExport = toExport.ToArray ();
 
+                TransferAnimationSource = null;
+                TransferAnimationDest = null;
+
                 // if only one object selected, set transfer source/dest to this object
                 if (ToExport.Length == 1) {
                     var go = ModelExporter.GetGameObject (ToExport [0]);