I'm planning an upgrade for our newton based swift cluster (OOO vm based) to a (kolla image based containers) train cluster So far I have tested the upgrade for the proxies, account_servers and container servers and it looks promising. I have in a test environment: - switched to the new proxies with the old ring files and it looks like everything works normally - Added the new (train) account and container servers to the rings and it looks like all is fine - Removed the old account and container servers, still fine - tested fall back, also fine My question actually is: Did the account and container database format change between newton and train in such a way that I might run into troubles trying the upgrade as tested above in ways that I did not yet foresee? Thanks Marcel