2 Exchange accounts set up. One works fine, when sending from the other the sent items show up in the other accounts draft folder

This is a very strange issue. Two exchange accounts are set up in one Outlook, Account A and Account B. When sending from Account A everything works as it should. When sending from Account B the e-mail gets sent out however instead of showing up in the sent folder it shows up in Account A's draft folder. I cannot figure out what is going on here. This is will Outlook 2011 for Mac all updates done. Our Exchange server is 2007 SP2, this is the only person having this issue out of 2000+ accounts. Any help would be appreciated because I have searched everywhere. Thanks