diff --git a/trunk/src/com/jpexs/decompiler/flash/gui/MainFrameRibbonMenu.java b/trunk/src/com/jpexs/decompiler/flash/gui/MainFrameRibbonMenu.java
index e57a7f8d1..e385e5980 100644
--- a/trunk/src/com/jpexs/decompiler/flash/gui/MainFrameRibbonMenu.java
+++ b/trunk/src/com/jpexs/decompiler/flash/gui/MainFrameRibbonMenu.java
@@ -530,7 +530,10 @@ public class MainFrameRibbonMenu implements MainFrameMenu, ActionListener {
 
     private void clearModified(SWF swf) {
         for (Tag tag : swf.tags) {
-            tag.setModified(false);
+            if (tag.isModified()) {
+                tag.setOriginalData(tag.getData());
+                tag.setModified(false);
+            }
         }
     }
 
diff --git a/trunk/src/com/jpexs/decompiler/flash/tags/Tag.java b/trunk/src/com/jpexs/decompiler/flash/tags/Tag.java
index 0be3d08a9..59271ebda 100644
--- a/trunk/src/com/jpexs/decompiler/flash/tags/Tag.java
+++ b/trunk/src/com/jpexs/decompiler/flash/tags/Tag.java
@@ -298,6 +298,10 @@ public class Tag implements NeedsCharacters, Exportable, ContainerItem, Serializ
         return data;
     }
 
+    public void setOriginalData(byte[] data) {
+        this.data = data;
+    }
+
     public byte[] getDataOrOriginalData() {
         if (modified) {
             return getData();