After a clean install of Ventura, I have manually transferred data from when the same Mac had Monterey. I then used
tmutil inheritbackup to reconnect to the same external backup disk that I had been using. That command was successful. However, it turns out that my account on Ventura has a different UID than it did under Monterey (despite having the same name). From the resulting mismatch, I not only can’t continue from the previous backup, but I have lost access to all the backed up data on the external disk. Is there a way to repair the UID mismatch?
(Preemptive comment: No need to preach the Migration Assistant gospel. It might well have been a better choice, but that is water under the bridge.)