ARTMS packaging change

For their first album, Dall, (and OEC Version Up, Heejin - K) they had the Loona-like packaging. It changed to a magazine like album with Club Icarus and now same with Hyper-Ego. Same with Loossemble actually - for their first two minis they had Loona adjacent packaging and then they suddenly switched it up with TTYL.

Does anyone know why? Is their an explanation for this, or speculation as to what could be the reason? I can only imagine that maybe the Loona adjacent packaging is more costly to make or that they want to establish their own identity. As far as I'm aware, the Loona packaging wasn't trademarked or anything. I'm just pondering about it because the Loona packaging is goated and i like how all of the albums were consistent on my shelf >:(