Sage50ca Cloud - Cloud data file not current - how to update?

SUGGESTED

We have 2 users on Sage50ca sharing via the Cloud service.  The recent system outage prevented both users from accessing the shared file however we did have a current backup.  We switched User 2 to single user mode / not sharing and continued to work for 2 days.  It appears the Cloud is now accessible.  How do we update the Cloud data to be the same as the new updated file on User 2's machine?