That's definitely unexpected! If you import an image, paint then close that painting, you should always see a save prompt.

Firstly, check that there is a ptg ( ArtRage painting file ) version that was saved. To save a PSD you'd need to specifically export as a PSD, so if you saved, you should have a painting file containing your work.

Otherwise, can you try this again, import the same PSD file, add a stroke of paint, close the painting in the same way and let me know the result?

Also, can you tell me which version of ArtRage you're using ( Help -> About ArtRage ) and the OS you're on?

The backup save system works like this:

To enable it, go to Edit -> Preferences -> Advanced then setting 'Store Backup Files' to a value higher than 0. This sets the number of copies to keep.

This will then automatically create a .ptgback extension file of the previous version of your painting whenever you save.

For example, if you saved 'mypainting.ptg' multiple times, you'd also have in the same folder 'mypainting_GenA.ptgback' 'mypainting_GenB.ptgback' and so on in the same folder, where GenA is always the previous version. In the event of a problem, loading one of these previous versions, then saving it again as a new painting should mean that the last save is protected.

The backup save system being disabled doesn't prevent ArtRage from prompting to save when you close a painting, so that shouldn't have an affect on that.