IDC is using IB to have CSMs book on behalf of analysts. Analysts were at one point in time in SDFC, but no longer are.

They are then manually provisioned a licenses via an invite link, but then the user table refreshes > sees that one of the analysts was in SFDC at one point in time > then removes them from the user table because they are technically "deactivated" in SFDC. Allowing admins to choose whether or not they can show deactivated users would prevent this issue.