It's what I expected to happen as having two different sets of 4K discs that are not identical in material could be problematic.And here's the answer.
The Godfather Trilogy on 4K Ultra HD: No Seriously, Here’s What You ACTUALLY Get (Now Confirmed by Paramount)...
Well, this has been a bit of a head-spinning and confusing series of developments so far today (as I’m sure you’ll all agree). You see... not long after we posted Paramount’s official press release for The Godfather Trilogy in 4K Ultra HD this morning (see our earlier post here), it quickly...thedigitalbits.com
TL;DR Both 4K UHD box sets in the US are 5 discs