We have our on-premises AD synced to Azure AD using ADConnect. We use Office 365 for Exchange/SharePoint/Skype/etc.
There was a user having some issues (not related to O365 or Azure AD) and the decision was made to create a new AD account for them (no, this was not the right choice but it was already done.) So now the same user has two AD accounts each synced to Azure AD. Their Office 365 licenses, mailbox, Skype, etc. are all linked to their old AD account but they are logging into their machine with their new AD account.
Is there any way that we can transfer everything Office 365/Azure AD linked under John@acme.com to JohnNew@acme.com? My inclination is no (and we just need to get rid of JohnNew@acme.com) but I wanted to check first.