I agree with Jeff that this isn't related to ALTER TABLE. FWIW, the original table was created in 2017 but a new version got created on August 5:
- 20739eb0-d92e-11e6-b42f-e7eb6f21c481 - Friday, January 13, 2017 at 1:18:01 GMT - 8ad72660-f629-11eb-a217-e1a09d8bc60c - Thursday, August 5, 2021 at 20:13:04 GMT Would that have been when you added the new nodes? Any possibility that you "merged" two clusters together? >
