Windows 8.1 Start Screen showing wrong account name

Hello...I apologize if this has been posted before...I don't exactly know what search terms to use to describe the problem to find an existing thread.

I am involved in prepping several Panasonic Toughpads for deployment in our environment w/ Windows 8.1 installed. While prepping, we are logging in with domain accounts that have some domain admin privileges for various setups on the local machine.

Upon completion of setup, logging in as the assigned domain user, which, on these systems, will be a local admin. However, after a few seconds, where the account name is displayed on the top right corner of the start menu, it shows the logged in domain username--as it should--then quickly changes to show the previously logged in domain admin user's name.

This is phenomenon is occurring for myself and two of my coworkers who are using isolated domain admin logins assigned to them.

Troubleshooting that has already happened: restarted the system, deleted the domain admin's user folder and assoicated registry key in the ProfileList to no avail. Logged in as yet a different user, and back to the assigned user's account but still showing my domain admin name in the account name. Is this getting circular yet?

Any thoughts?

I could be off base here, but are you setting up an MS account for the domain user? That's the only way I can think that it would change the name.