I'm playing around with ArtRage and found the following:
On layer 1, I create several red paintstrokes.
Now, if I add a layer and paint blue strokes over the red ones, I can then erase back into the red strokes no problems.
If I delete layer 2 and this time duplicate layer 1 and then paint blue strokes over the red ones, when I erase back, this time ArtRage erases to white ?
Why is this ? I would have expected to have erased what was on layer 1, ie. the red paint strokes.