Originally Posted by
sukn
As for the OP's question, yes, you can upgrade your companion using stickers even though you are already upgraded using a SWU. They will inherit your status.
That assumes you can find an agent who knows what they are doing. I can't tell you how many agents have told us that I cannot inherit husband's status on separates PNR's. Many just do not know how to do it. Hang up and call back. We are almost never on same PNR due to his usually being paid for by work, and mine not.