Index: /applications/editors/josm/plugins/mapillary/src/org/openstreetmap/josm/plugins/mapillary/commands/CommandMoveImage.java
===================================================================
--- /applications/editors/josm/plugins/mapillary/src/org/openstreetmap/josm/plugins/mapillary/commands/CommandMoveImage.java	(revision 31478)
+++ /applications/editors/josm/plugins/mapillary/src/org/openstreetmap/josm/plugins/mapillary/commands/CommandMoveImage.java	(revision 31479)
@@ -3,4 +3,5 @@
 import static org.openstreetmap.josm.tools.I18n.trn;
 
+import java.util.ArrayList;
 import java.util.List;
 
@@ -30,5 +31,5 @@
   public CommandMoveImage(List<MapillaryAbstractImage> images, double x,
       double y) {
-    this.images = images;
+    this.images = new ArrayList<MapillaryAbstractImage>(images);
     this.x = x;
     this.y = y;
Index: /applications/editors/josm/plugins/mapillary/src/org/openstreetmap/josm/plugins/mapillary/commands/CommandTurnImage.java
===================================================================
--- /applications/editors/josm/plugins/mapillary/src/org/openstreetmap/josm/plugins/mapillary/commands/CommandTurnImage.java	(revision 31478)
+++ /applications/editors/josm/plugins/mapillary/src/org/openstreetmap/josm/plugins/mapillary/commands/CommandTurnImage.java	(revision 31479)
@@ -3,4 +3,5 @@
 import static org.openstreetmap.josm.tools.I18n.trn;
 
+import java.util.ArrayList;
 import java.util.List;
 
@@ -26,5 +27,5 @@
    */
   public CommandTurnImage(List<MapillaryAbstractImage> images, double ca) {
-    this.images = images;
+    this.images = new ArrayList<MapillaryAbstractImage>(images);
     this.ca = ca;
   }
Index: /applications/editors/josm/plugins/mapillary/src/org/openstreetmap/josm/plugins/mapillary/commands/MapillaryRecord.java
===================================================================
--- /applications/editors/josm/plugins/mapillary/src/org/openstreetmap/josm/plugins/mapillary/commands/MapillaryRecord.java	(revision 31478)
+++ /applications/editors/josm/plugins/mapillary/src/org/openstreetmap/josm/plugins/mapillary/commands/MapillaryRecord.java	(revision 31479)
@@ -75,4 +75,7 @@
         if (!command.images.contains(img))
           equalSets = false;
+      for (MapillaryAbstractImage img : command.images)
+        if (!this.commandList.get(this.position).images.contains(img))
+          equalSets = false;
       if (equalSets
           && this.commandList.get(this.position).getClass() == command