Problem creating more than one PO at a time in RMS....

We had three different users log onto SO mgr and they each started creating their new POs for different vendors, where they would create new items on the fly....some of the items created in register 1 would pop up in the "add items" window of register 2's PO, and sometimes the reg 1 items would be added to the "selected" items of register 2's PO...this strange behavior also happened in register 3.....when you would cick OK to go back to the contents tab, you would get a message indicating that item XXX is not assigned to the supplier you assigned to this PO, do you want to include anyway?....to which we would answer "no" so that the foreign items would not get added to the PO...anyone seen this? Bug maybe? hotfix? I appreciate any help on this - thks (running RMS version 2)

if at all, if more people don't complain about it to MS.