[Request and Recommended Approach to Implement a "Save As Copy" Feature.]

I just make sure I save the file I've got open, then Save As .png etc. Then retrieve the pdn file from File >>> Open Recent option. That way there's no need to undo.

Personally I don't think any one of us using PDN can grumble @ a few extra clicks ... look what you get for the price

Don't get me wrong, PDN is a great program; I'm just feature-requesting, not grumbling. In the meantime I'll work around the lack of the feature.

[Request and Recommended Approach to Implement a "Save As Copy" Feature.]

I too would appreciate a "Save Copy" feature. The extra steps of confirm flatten and then undo the operation are just that...extra. Having fewer clicks is a good thing, imo. Maybe just a "Save Flat Copy" or something would work.