Sorry you ran into a problem there. RAW Power stores adjustments in sidecar files located in its “sandbox” directory. Because the sidecars are not in the same directory as the originals, RAW Power uses the file name + some metadata to associate the sidecar with the original.
So, if you edit, then rename the original, the association is lost.
One solution to this situation is to (carefully) rename the sidecar file. This is how to do it:
1) Finder: Go > Go to Folder
2) Paste the following (no quotes) and hit return:
3) you will find a bunch of files; some are jpgs, others are the sidecars.
The jpg is the “full size” jpeg preview made by the app after editing.
4) The first part of the name is what you want to change:
(e.g., “ _DSF3894” in the below name)
I suggest duplicating the sidecar file before renaming it, so you can easily restore it if the rename goes awry.
I suggest also renaming the full size jpeg the same way.
I hope this helps.