Describe the problem
Looking at a legit save, the pkm are all traded as eggs to this save and then they are hatched on the save. Opening the PKM in PKMView and then clicking the red legality icon just automatically legalizes them and shows as legal (assuming due to memory being refreshed on legality check). So the screenshot below are after ctrl+clicking on the PKM in box!
To Reproduce
Trade an egg from one save file to another and then hatch it in the second save
Expected behavior
Should show legal. Probably another SWSH quirk
Screenshots

Zipped up the PKM after dragging and dropping directly from the box
lol.zip
It's sad they didn't bother checking if it's an egg before slapping on HT memories.
Most helpful comment
It's sad they didn't bother checking if it's an egg before slapping on HT memories.