One of my favorite fifties groups is The Coasters and Yakety Yak is a song that for me defines do-wop music. Like many of the groups of the era instead of breaking up the Coasters "split" into many different groups all claiming the legacy of the original outfit.
Today we have (and there are probably even more than this)
The Original Coasters which features NO Original Coasters but is managed by Carl Gardner's widow.
The Coasters featuring Carl Gardner Jr. Features the son of Carl Gardner and longtime (1962-2011) Coasters guitarist Curley Palmer
Leon Hughes' Coasters. Features original Coaster Leon Hughes.
Al Jacobs Coasters. Features original Coasters guitarist Al Jacobs.
Original Cornell Gunter's Coasters. Features no original members but descended from the late Cornell Gunter's splinter group.
There are two original Coasters still alive and no less than FIVE groups currently working

This makes the Beach Boys situation seem very tame by comparison.
Imagine if this had happened with ALL rock groups.....we may have gotten to see The Beatles featuring Laurence Juber and Clare Torry's Original Pink Floyd

Fun to think about.