Salesperson not matching AR to OE?

Has anyone ever heard of a salesperson code being marked one way in AR (Invoicing tab) and coming up another way in OE when placing a new order? We changed a salesperson in AR on an account a few months ago, but when we place new orders for the account it still shows the old salesperson code on the new order. Is there somewhere other than the AR invoicing tab that this info should be updated? Our DataCare checks have been clean, and we are running OE 8.1D 110316 and AR 9.0B 100910.
Any info is appreciated.

Hi Kristin,

Have you checked the Saleperson on the Ship-to tab? There's one there too.

Excellent, I did not realize it was also there. That would explain the problem. Thanks for the quick solution Andrew!

Coincidentally we had the same issue today. To prevent this from happening in the future, I wiped out all the "salesperson" data in the contacts/shipto by doing an import with a blank column. When this field is blank the order will default to the salesperson on the invoicing tab. Unless you have different reps for different locations for the same customer, then leaving this field blank is much easier to maintain. Wish I could disable the field (and a few other fields).