Any way to retreive entire playlist from SD?

Hello ladies and gents,

I was searching for my Minimal and Tech-House collection on my computer and noticed it got deleted somehow due to my stupidity, it is on my SD card though but Rekordbox does not allow me to import it because the tracks are not in my RB collection, do I have to get them all out of those individual folders in the content folder or is there some other way?

Thanks in advance.