"Back in my bodywork days a condition similar to this would occasionally occur and it was called "sand scratch swelling". It was mainly associated with lacquers and would exhibit nearly a identical before condition. This happens when the solvents in the new paint cause the old paint to soften and swell. The sanding marks done during the preparation stage would actually swell leaving this condition."
Very interesting Bobby. My first theory was that the body shop caused this when they sprayed the hood. Then I went with the scouring pad theory. I really dont know what to think. The arcing of the scratches was so uniform and like you noticed, transitioned right over the raised edges.
Plus, when I exfoliated the dead paint, the pock marks started to show themselves. i am wondering if it was solvent pop and just a shoddy paint job to begin with.
The client received the car this morning and was beyond thrilled. I did let him know that I was not confident this was going to last too long. Even though it looked good, the paint was failed. He is not opposed to a repaint but wants to delay spending the money as long as he can. I can't fault the guy for that.