Add one-shot/loops wav files to loops browser?

I try to put a folder with a bunch of FX or loops that are in wav format just so i can browse through them quickly inside logic without having to go in to finder.

When i drag my loops folder to the loops browser then i wait for spinning ball to dissapear and i can see my folder but when i open it, it shows only 1 loop out of 100 at least that i had in that folder.

Also, if i drag like 10 folders with wav files (one-shot) and wait, i can only see 4 of them. The other 6 folders dont want to get imported for some reason, even if i try to import them one by one.

Is there any right/wrong way of doing this?