CDJs/XDJs "losing" proper BPM readout after upgrade to Rekordbox 5

Do you have the latest firmware on the players themselves?

They were two different sets of players at two different clubs. I have no way to know. 

But I can tell you that these were the first uses of the drives with music exported from Rekordbox 5. 

It would help to know -- simply open the UTILITY menu and it will be displayed within.

I can ask one person but the other was a club I have never played at before across the country. I don't own the CDJs, nor am I in the same city as them. 

Sorry, I can't help resolve this particular situation without those details. My recommendation would be to carry a USB drive with current firmware for any players you might encounter so you could update them as needed.

I did find out that the XDJs had 1.3 firmware (not latest update). But as a touring DJ, I have little control over firmware updates. So if your advice is "update the firmware", that's a big "DUH", but not particularly helpful given how touring DJs use Rekordbox. 

And reminder that this never happened before until I started using Rekordbox 5. 

Yeah, I am sure a firmware update in the middle of a club night is super easy. No bigs, right? 

Whatev. Will load up a drive with the firmware updates for literally everything just in case. 

Did this happen with all exported tracks or ONLY tracks that had been exported with rekordbox 5 (and do you happen to know which version analysed those tracks)?

I had to reanalyse everything after a computer death, so all of them were analysed in RB5 and I used sync manager to put them on the drive. 

How many of the tracks on the drive were already on there from before the RB5 switch?

None. Reformatted both drives.