UVW Master - Flatten is deleting all the PolyPaint information?

[FattyBull]

I just noticed this. I have a final model, PolyPaint applied.
I use UVW Master und unwrap all the different islands.

After unwrap process is done, the polypaint information is still there.
I select Flatten, to check the UVW islands, Unflatten… and kaboom.
All the Polypaint information is gone.

Should that be that way?
Kinda harsh to lose all the polypaint information.

Thanks

[Spyndel]

This can be avoided by working on a clone, or by converting the polypaint into a texture prior to flattening.