If that is the case you can attempt to run it from the command line and rescan. Also, are you running the most recent version of the QT? You are aware we had a hard fork that triggered on the 30th of November. If your QT is from before November 1st then that could be why.
Yes, I am aware of the HF, so. I downloaded the QT (BitBay version v2.0.0.0-g32a928e) wallet off their website after the HF date. The sync is up-to-date, and I see the tx on the explorer. However, it still doesn't show up in the QT wallet

I am a noob. How do I get into the the command line and rescan???
Thanks a bunch
Hope someone can answer you soon. I don't know why it is not showing in your wallet. Also not sure how you do a manual rescan
However 100% certain if you see it in the explorer it is there. Just a case of getting the wallet reading it properly.
One of the team will answer quickly I am sure.