diff --git a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/abc/ScriptPack.java b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/abc/ScriptPack.java
index 7615eaf6b..db7874997 100644
--- a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/abc/ScriptPack.java
+++ b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/abc/ScriptPack.java
@@ -243,4 +243,11 @@ public class ScriptPack extends AS3ClassTreeItem {
         }
         return true;
     }
+
+    @Override
+    public boolean isModified() {
+        return abc.script_info.get(scriptIndex).isModified();
+    }
+    
+    
 }
diff --git a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/tags/DefineBinaryDataTag.java b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/tags/DefineBinaryDataTag.java
index 9ecd56fec..86308e5c6 100644
--- a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/tags/DefineBinaryDataTag.java
+++ b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/tags/DefineBinaryDataTag.java
@@ -128,4 +128,15 @@ public class DefineBinaryDataTag extends CharacterTag {
 
         return false;
     }
+
+    @Override
+    public boolean isModified() {
+        if(super.isModified()){
+            return true;
+        }
+        if(innerSwf!=null){
+            return innerSwf.isModified();
+        }
+        return false;
+    }        
 }
diff --git a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/timeline/AS2Package.java b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/timeline/AS2Package.java
index e4154d635..408bd7409 100644
--- a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/timeline/AS2Package.java
+++ b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/timeline/AS2Package.java
@@ -113,4 +113,21 @@ public class AS2Package implements TreeItem {
     public String toString() {
         return name;
     }
+
+    @Override
+    public boolean isModified() {
+        for(ASMSource s:scripts.values()){
+            if(s.isModified()){
+                return true;
+            }
+        }
+        for(AS2Package p:subPackages.values()){
+            if(p.isModified()){
+                return true;
+            }
+        }
+        return false;
+    }
+    
+    
 }
diff --git a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/timeline/AS3Package.java b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/timeline/AS3Package.java
index 59b783b3a..274be4918 100644
--- a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/timeline/AS3Package.java
+++ b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/timeline/AS3Package.java
@@ -147,4 +147,23 @@ public class AS3Package extends AS3ClassTreeItem {
     public String toString() {
         return packageName;
     }
+
+    @Override
+    public boolean isModified() {
+        List<ScriptPack> sps=getScriptPacks();
+        for(ScriptPack sp:sps){
+            if(sp.isModified()){
+                return true;
+            }
+        }
+        List<AS3Package> ps=getSubPackages();
+        for(AS3Package p:ps){
+            if(p.isModified()){
+                return true;
+            }
+        }
+        return false;
+    }
+    
+    
 }
diff --git a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/timeline/Frame.java b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/timeline/Frame.java
index 18c12f735..02f59f66f 100644
--- a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/timeline/Frame.java
+++ b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/timeline/Frame.java
@@ -87,4 +87,29 @@ public class Frame implements TreeItem, Exportable {
     public String getExportFileName() {
         return "frame_" + (frame + 1);
     }
+
+    @Override
+    public boolean isModified() {
+        for(Tag t:innerTags){
+            if(t.isModified()){
+                return true;
+            }
+        }
+        for(Tag t:actions){
+            if(t.isModified()){
+                return true;
+            }
+        }
+        for(ASMSourceContainer t:actionContainers){
+            if(t.isModified()){
+                return true;
+            }
+        }
+        if(showFrameTag!=null && showFrameTag.isModified()){
+            return true;
+        }
+        return false;
+    }
+    
+    
 }
diff --git a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/timeline/FrameScript.java b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/timeline/FrameScript.java
index 87dc0fac6..2786ea475 100644
--- a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/timeline/FrameScript.java
+++ b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/timeline/FrameScript.java
@@ -53,4 +53,11 @@ public class FrameScript implements TreeItem, Exportable {
     public String getExportFileName() {
         return frame.getExportFileName();
     }
+
+    @Override
+    public boolean isModified() {
+        return frame.isModified();
+    }
+    
+    
 }
diff --git a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/timeline/TagScript.java b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/timeline/TagScript.java
index 99d8d3a08..6b58ad636 100644
--- a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/timeline/TagScript.java
+++ b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/timeline/TagScript.java
@@ -76,4 +76,16 @@ public class TagScript implements TreeItem, Exportable {
     public int hashCode() {
         return tag.hashCode();
     }
+
+    @Override
+    public boolean isModified() {
+        for(TreeItem f:frames){
+            if(f.isModified()){
+                return true;
+            }
+        }
+        return tag.isModified();
+    }
+    
+    
 }
diff --git a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/treeitems/FolderItem.java b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/treeitems/FolderItem.java
index 29deabddd..2bf9f7c56 100644
--- a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/treeitems/FolderItem.java
+++ b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/treeitems/FolderItem.java
@@ -53,4 +53,15 @@ public class FolderItem implements TreeItem {
     public String toString() {
         return str;
     }
+
+    @Override
+    public boolean isModified() {
+        for(TreeItem ti:subItems){
+            if(ti.isModified()){
+                return true;
+            }
+        }
+        return false;
+    }
+    
 }
diff --git a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/treeitems/HeaderItem.java b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/treeitems/HeaderItem.java
index 0c8ce6bd6..71fbdad3f 100644
--- a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/treeitems/HeaderItem.java
+++ b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/treeitems/HeaderItem.java
@@ -42,4 +42,11 @@ public class HeaderItem implements TreeItem {
     public String toString() {
         return name;
     }
+
+    @Override
+    public boolean isModified() {
+        return false; //??
+    }
+    
+    
 }
diff --git a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/treeitems/SWFList.java b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/treeitems/SWFList.java
index e5a941f69..7aa4ae364 100644
--- a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/treeitems/SWFList.java
+++ b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/treeitems/SWFList.java
@@ -172,4 +172,16 @@ public class SWFList implements List<SWF>, SWFContainerItem {
     public List<SWF> subList(int i, int i1) {
         return swfs.subList(i, i1);
     }
+
+    @Override
+    public boolean isModified() {
+        for(SWF s:swfs){
+            if(s.isModified()){
+                return true;
+            }
+        }
+        return false;
+    }
+    
+    
 }
diff --git a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/treeitems/TreeItem.java b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/treeitems/TreeItem.java
index fba9f8e36..749aa67d0 100644
--- a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/treeitems/TreeItem.java
+++ b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/treeitems/TreeItem.java
@@ -25,4 +25,6 @@ import com.jpexs.decompiler.flash.SWF;
 public interface TreeItem {
 
     public SWF getSwf();
+    
+    public boolean isModified();
 }
diff --git a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/types/BUTTONCONDACTION.java b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/types/BUTTONCONDACTION.java
index e6999ca72..5f2710425 100644
--- a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/types/BUTTONCONDACTION.java
+++ b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/types/BUTTONCONDACTION.java
@@ -145,7 +145,7 @@ public class BUTTONCONDACTION implements ASMSource, Serializable {
      */
     @Internal
     public ByteArrayRange actionBytes;
-
+    
     /**
      * Sets actions associated with this object
      *
@@ -239,6 +239,16 @@ public class BUTTONCONDACTION implements ASMSource, Serializable {
         }
     }
 
+    @Override
+    public boolean isModified() {
+        if (tag != null) {
+            return tag.isModified();
+        }
+        return false;
+    }
+    
+    
+
     @Override
     public GraphTextWriter getActionBytesAsHex(GraphTextWriter writer) {
         return Helper.byteArrayToHexWithHeader(writer, actionBytes.getRangeData());
diff --git a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/types/CLIPACTIONRECORD.java b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/types/CLIPACTIONRECORD.java
index 0bd1ed68b..3dfa2232f 100644
--- a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/types/CLIPACTIONRECORD.java
+++ b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/types/CLIPACTIONRECORD.java
@@ -43,7 +43,7 @@ import java.util.logging.Logger;
  * @author JPEXS
  */
 public class CLIPACTIONRECORD implements ASMSource, Serializable {
-
+    
     public static String keyToString(int key) {
         if ((key < CLIPACTIONRECORD.KEYNAMES.length) && (key > 0) && (CLIPACTIONRECORD.KEYNAMES[key] != null)) {
             return CLIPACTIONRECORD.KEYNAMES[key];
@@ -229,9 +229,19 @@ public class CLIPACTIONRECORD implements ASMSource, Serializable {
     public void setModified() {
         if (tag != null) {
             tag.setModified(true);
-        }
+        }       
     }
 
+    @Override
+    public boolean isModified() {
+        if (tag != null) {
+            return tag.isModified();
+        }  
+        return false;
+    }
+
+    
+    
     @Override
     public GraphTextWriter getActionBytesAsHex(GraphTextWriter writer) {
         return Helper.byteArrayToHexWithHeader(writer, actionBytes.getRangeData());
diff --git a/src/com/jpexs/decompiler/flash/gui/abc/ClassesListTreeModel.java b/src/com/jpexs/decompiler/flash/gui/abc/ClassesListTreeModel.java
index de57feb98..41e70fcb6 100644
--- a/src/com/jpexs/decompiler/flash/gui/abc/ClassesListTreeModel.java
+++ b/src/com/jpexs/decompiler/flash/gui/abc/ClassesListTreeModel.java
@@ -186,4 +186,11 @@ public class ClassesListTreeModel extends AS3ClassTreeItem implements TreeModel
     public String toString() {
         return AppStrings.translate("node.scripts");
     }
+
+    @Override
+    public boolean isModified() {
+        return root.isModified();
+    }
+    
+    
 }
diff --git a/src/com/jpexs/decompiler/flash/gui/tagtree/TagTree.java b/src/com/jpexs/decompiler/flash/gui/tagtree/TagTree.java
index 077bb18c3..262180647 100644
--- a/src/com/jpexs/decompiler/flash/gui/tagtree/TagTree.java
+++ b/src/com/jpexs/decompiler/flash/gui/tagtree/TagTree.java
@@ -191,14 +191,14 @@ public class TagTree extends JTree {
                 setIcon(icons.get(type));
             }
 
-            boolean isModified = val instanceof Tag && ((Tag) val).isModified();
+           /* boolean isModified = val instanceof Tag && ((Tag) val).isModified();
             if(val instanceof ScriptPack){
                 ScriptPack sp=(ScriptPack)val;
                 if(sp.abc.script_info.get(sp.scriptIndex).isModified()){
                     isModified = true;
                 }
-            }
-            
+            }*/
+            boolean isModified = val.isModified();
             if (isModified) {
                 if (boldFont == null) {
                     Font font = getFont();