To give a an example, I had a problem with the vette I'm doing on the right side because my FIL at one point spray bombed the door jambs black years ago and it still wrinkled in some corners where I didn't get every last little bit off. So now i have to dig through sealer, 3 coats of black, 4 coats of pearl, and 2 coats of clear. Luckily it's only a couple small areas I can touch up.
Have never done anything close to that type of painting, but have seen the wrinkle you speak of just going from one brand of spray bomb to another... or even brushing paint over spray paint :BangHead: