It's annoying when you edit something you edited before, but now it's grayed out. I don't see the point? It's not an editing conflict if the data your editing is your own edit. Maybe this could be changed so that editing conflicts are only counted when you change someone else's edit. It would take longer for fields to get grayed out this way which would mean a better overall quality of data in the end.
One example where this happens a lot is when you need to swap two episodes in episode order. You change episode 1 to 3 and then 2 to 1. But when you go to change episode 3 to 2, now it's grayed out and you have to submit an edit request which can take hours to get fixed.