My guess is that there wasn't a PID in the system when the checklists were added. Sometimes, when the PID gets added, it will pull in whatever's already out there. In the case of single names and aliases, however, I'm not 100% sure how the system can auto-pick them up. I've even had issues inthe past where an alias was used, and it wasn't until I tried verifying the set that the name finally linked.
Short answer, I don't think so, most likely, no.
-- Dan --
Note: Please see my profile for more info regarding trading (section updated 3/4/2024). I have added a large portion of my inventory to the site, and currently have trading turned on (details are in my profile).