I swear I've seen the answer to this somewhere, but I can't find it now.
I had Boba Fett vs. Luke with Old Ben's Spirit (and a bunch of other enhancements to boot!). I won the edge and dealt the finishing blow to Luke. Old Ben's Spirit kicked in and removed all damage counters. Then Fett's reaction came into play. I would say that he dealt damage, even if the damage counters were removed by Old Ben's Spirit, so Fett captures Luke and discards all the enhancements.
I could also envision someone arguing that no damage was done since Luke is undamaged after Old Ben's Spirit takes effect, but I don't think that's right.
What do you guys think?
You did damage Luke. You damage every character with Boba even if he kills them. The issue is that when he kills them, they are discarded before he can use his Reaction. The fact that Luke remains means you can finally use Boba's Reaction. The damage was at one point placed on Luke.afterall.