Spot Repair Work
Assuming you are not dealing with a metallic, it's a piece of cake.
Clearcoat is an excellent sealer. No need to remove it. Any filler work you do can go right over the clearcoat. Just scratch it good so the filler has something to grab ahold of.
Once you have your filler work done, spray on a couple of coats of 2K and blocksand. Just spray your basecoat over the 2K. Each layer of paint or CC needs to be stepped out a little larger than the previous coat. I usually allow 2" of step. In other words, if you had a 10" diameter area to spray, the next coat would 14". The third would be 18". As you can see, a small repair can quickly become large. Plan on that when you prep the area for spraying.
Blending CC can be a bear. The best option is to spray the entire panel. If you insist though, I can give instructions for that also.
Yes, the clearcoat has to be scuffed. Any CC or paint that has exceed the maximum topcoat time needs to be scuffed.
Paint sticks by one of two methods. It either melts into the previous coat or grabs unto a rough surface.


