I have a WID DB ADFS Farm (all nodes on WS2016 but FBL is 1 i.e. WS2012R2)
I want to raise the FBL to 3. I know I can use invoke-adfsfarmbehaviorlevelraise command
https://docs.microsoft.com/en-us/powershell/module/adfs/invoke-adfsfarmbehaviorlevelraise?view=windowsserver2019-ps
But is raising of FBL reversible?
I know there is a restore-adfsfarmbehaviorlevel command
https://docs.microsoft.com/en-us/powershell/module/adfs/restore-adfsfarmbehaviorlevel?view=windowsserver2019-ps
I can't find much information on this. Like under what scenarios can I use this restore FBL command? Is there a time limit after I raise the FBL before this restore FBL command stop working? I mean after I raise the FBL, I would think the WID DB will be updated and replicated to the secondary nodes.