Missing HISTORY from USB from CDJ2000NXS2

I know this subject is on, but I dont see solution, so please can pioneer or others who solved this problem give us the STEPS needed and direct what and how to do it.

The tracks I used to play on CDJ2000NXS2 was saved on USB under HISTORY folder as usual. I used to see them also on the rekordbox software, and when I plug back the USB to the CDJs I see all HISTORY, but recently, the HISTORY its empty every time I plug it back after I play. 

I see the HISTORY in the rekordbox software, but I cant move it to the USB so it will be there, I dont want it as playlist, I want it as HISOTRY as it was before. 

Looking forward to hear back soon of what to do or be done.

RAMSEY SPENCER