Well, I choose my Gliscor's PID, then enter it's item and ability info, where it came from, its EVs, it's attacks, then its trainer info. Then I just "Set from Controls" and "Show in Controls" and it's item, ability, and attacks are missing. Last time this happened was with an Abomasnow, but when I fiddled around with those unnecessary numbers in the Trainer ID tab, I got some info to stay, so I bet that's it.