SaaS CMC cant see any management zones?!

[ChadTurner]

When creating a group just now, I went to assign a Management Zone to the group for user access. For some odd reason Dynatrace backend isnt seeing any Management Zones. 

But we have tons of Management Zones: 

Also the Users now show the Management Zone Id and not the true Management Zone Name:

Anyone else having this issue? This occured today, and our cluster update was back on the 21st. we are currently on: 1.228.103.20211019-165601 

[ChadTurner · Accepted solution]

Update: The issue has been fixed now. The root cause was a communication issue between Dynatrace components which host the management zone information and host group information.