Reacquainting myself with ArtRage after not using it for several years on my iPad Pro. I've created a painting with multiple layers which I saved on the iPad. I wanted to make a different version by changing one of the layers so I duplicated the painting and loaded it by selecting Edit Painting. I find the saved painting only has one layer - all of the layers I initially created are merged into one layer. I then loaded the original saved painting and find that I only have one layer in that file as well.

Any suggestions on how to save my work and maintain the layers as originally created?