Our Azure AD connect stopped working last week. All the accounts in Office365 are now showing as cloud accounts. When we go to configure the sync again it is telling us we don't have a verified domain, which we don't because we're using a .local domain. The UPN suffixes in AD do match a verified domain. The only option available is to tick the box that says that any users without UPN suffixes for verified domains won't be able to login using their AD credentials. If I tick that and then start the sync will it automatically convert the cloud accounts to synced accounts or will it over-write the existing mailboxes?
