Let me start off with, I know that in a Hybrid environment AD edits need to be done on-prem. However, I have a special case that I can't for the life of me figure out.
I have a user that somehow managed to get their personal cellphone information on the 365 AD but not on the on-prem AD.
We do not seem to be having any sync issues, new accounts create & sync with no issue, edits to users done in the on-prem AD sync to the cloud AD no issue.
With the exception of this single user, who has managed to get their personal cellphone listed in our AD contact information. When I go to AD to edit it, everything is greyed out completely, and as I said, it isn't in the on-prem information at all.
I have seen a solution on-line that I don't like, due to the large impact it would have overall on operations, that solution was to disable syncing between 365 AAD and our on-prem.
Does anyone have an alternative solution? Someway to unlock editing in 365 AAD?