i have accidentally done this and wiped out my chart many times

source/funkin/play/PlayState.hx

@@ -2548,6 +2548,13 @@ class PlayState extends MusicBeatSubState
 
     // Redirect to the chart editor playing the current song.
     if (controls.DEBUG_CHART)
+    {
+      if (isChartingMode)
+      {
+        if (FlxG.sound.music != null) FlxG.sound.music.pause(); // Don't reset song position!
+        PlayState.instance.close(); // This only works because PlayState is a substate!
+      }
+      else
       {
         disableKeys = true;
         persistentUpdate = false;
@@ -2556,6 +2563,7 @@ class PlayState extends MusicBeatSubState
             targetSongId: currentSong.id,
           }));
       }
+    }
     #end
 
     #if (debug || FORCE_DEBUG_VERSION)