Was doing some cleanup on a chassis I've been working on and used Brake Clean as it is cheaper than electronics cleaner. Not a good choice. I had touched up some spots with Testor's oil base enamel , two days old. It was cut like a water clean up brush. Also it soften and removed factory black paint from what were body (not chassis) parts. The chassis paint was not harmed.
Not a final finish and really no harm aside some time and mess.
Don't use Brake Clean if there is any paint around.