I don't think that the Constitution class starships Endeavor, Ahwahnee and Emden had been refited.
Assuming they had anything to do with the Constitution
class, that is.
I mean, we only have the names and registries of those ships, not class identities - and then (supposedly) some silhouettes that may or may not represent the Constitution
class. The silhouettes could be generic "this is a heavy cruiser" signage, covering half a dozen classes, or then these modern ships happen to look a bit like the Constitution
refit when viewed from above.