Originally Posted by
Grouchy
From my own experience (with SWU's put in incorrectly) if an agent key them into the system incorrectly and you get to fly upfront no miles, no SWU's are taken and you get a freebie.
This might be true if your upgrade is somehow confirmed when the SWU isn't coded correctly, but I wouldn't want to count on this if I'm hoping that an upgrade will clear.
If the OP does nothing, there's a chance that OP will get a "free" upgrade without using miles or a SWU, possibly earlier or with higher priority than is warranted. However, if the OP wants the upgrade, IMO it would be wiser to have the problem fixed. It's all a matter of what is more important to the OP and how risk averse the OP is with respect to losing the upgrade or losing some miles.