How to change CRM IMAP Server Parameters

How to change CRM IMAP Server Parameters

I had set up my CRM to use my hosted Exchange provider and everything worked great but recently I switched to Office 365 and I cannot see how I can change my incoming mail server.  The outgoing server I can highlight the values that are there and then change them and save but the incoming seem to be locked and I cannot change anything.

I considered deleting the IMAP setup and starting over but then got a big warning that a lot would be deleted so I figure I'll ask here first to see if there is a way for me to do this without wiping out my IMAP settings and starting over.

Thank you!