Hello. My name is ***** ***** I will be assisting you today.
Are both accounts setup on the same computer within Windows Live Mail?
Do you know if the accounts are setup with pop3 or imap?
It may be easier to remove both accounts and add them again.
Yes with pop3 you would, do you have Microsoft Outlook installed?
Go to file export mail and save your emails somewhere for both accounts. Then we can remove and add them again.
We can do remote support if you'd like.