He switched the last duchy not with the intent of doing a meger, though, but to keep his assets. Imo, this should be considered... I believe him that merger wasn't the intent.
I think that we should get rid of these tricky rules... let's just add serious penalties for when a duchy switches allegiance and it's either the capital or the last duchy of the old realm. Let's just make the process painful, instead of forcing people who want mergers to find (somewhat easy) workarounds.
