Removing the old paint “edges”

Ok so i looked it up and yes it is a single stage enamel that gets reduced but not catalyzed. u definitely do not want to buff that. U will have major issues. Thats basically a tractor type paint. Spray and go. The only 2 options i see are strip it or if by some miracle u can try 2 lightly sand and cover it w epoxy sealer and see if it takes. Then spray your new paint. But this is a total gamble and no guarantee it will last