Today I export tracks and the grid and cues disappear

Since the last update 7.2.12, 
when I export a playlist from my Mac, perfectly created with Grid and CUE, 
to a USB drive, some or all of the tracks are physically present 
and play without problems, but some or all of them don't have 
visible Grid and CUE. I've deleted them several times with no success. 
What can I do? I'm in a hurry because I have a DJ set on Saturday.

MacBook Air M2 rekordbox 7.2.12...
Today I downgraded to 7.2.11.0342 with no results, the problem persists.