Having an issue with toon boom

hey, I just got back into using toon boom today, I uploaded a png from procreate into toonboom to use as a cell but noticed in toon boom it was blurred a little and had a white outline, how do I fix this so its more clear and not blurry and pixelated also I copy and pasted some frames but when I went to erase parts of them or redraw parts, it changed all of the frames I copy and pasted, how do I make it so that I can copy and paste frames and still edit them without editing all of them?