Is it possible they confused a decision about the end title arrangement with the main title? There seems to be several variations on that as well.
I'd check the episodes themselves, but my Blu-Ray sets are in storage (and their soundtracks are not quite the same as the original broadcasts; as far as I know those are only available on Laser Disc, which I don't have access to) and on Netflix the main title is the one newly recorded for the remastered versions in 2006.*
*I think that's the right date.
Solow repeats this story about dropping the soprano version in his Archive of American Television interview (from 2008).