Yes it is, but you want to copy onto the ipf as the game is protected - once you know which tracks.
The changed tracks will be stored by uae as a diff file among your save images. Write enable the disk image in uae to enable using a diff file.
You can rollback all of your changes by deleting the save image through uae interface (it becomes write protected after that) or simply deleting the corresponding file in your save image directory.
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