Yeah, I own most packs so I don't really filter using the packs. If you don't have the items from that pack, the game will just replace it with something familiar that the base game has. Some people literally only use one object from a pack, so I don't mind that potted plant not showing up lol. Though this sucks if you want to download a venue that centers mostly around items from one or several packs. Doubt they will ever edit this.
I wish they could also just add more filters for finding what you really want. Sometimes I want a one story house or a male single sim, but there are no filters for this....
