Helen,
thanks again for following up on this.
Even though we already talked and so many messages were posted in Confluence and several tickets, I still think it's weird to have all the feedback and communication stuff after rolling out the new user mgmt. No rollback script. The train has already left, basically.
I guess "user management" was not a Story but an Epic, so there must have been several sprint planning sessions, reviews, demos...and not in a single one of them the user proxy flagged that crucial functionality would be dropped for weeks, maybe months?
My 2 cents...
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