I bought more loops from loop masters. I try to import them to Garageband but I won't take them all in.

So I bought more loops from Loopmaster as Apple loops format. The package opens up as many folders. Some of the more simpler sounds (one hits for example) went smoothly to the loops catalogue just by dragging and dropping. Some other folder (melodic lines for example) doesn't import that smoothly. With dragging and dropping it might import 10/50 files selecting them basically randomly. They were in alphabetical order but other than that it didn't make any sense why it chose to import only those specific files. Now it doesn't import the ones it left behind even when I manually try to import them with dragging and dropping one by one. It is so frustrating! I want to get my composing going but I'm stuck with this problem. Please, please, help me! Is dragging and dropping the best option or could I copy the files to some folder so that the new loops would just pop up when I restart the program?