I don’t see BPM in the display of the Denon MCX8000. We have download the newest updates for MCX8000 and Engine Prime.
But did you export tracks from Engine Prime to the USB stick using the “MCX8000 compatibility” option?
Update the tracks id3 tags with the BPM value first. Afterwards, load them in Engine Prime, analyze them and then export to mcx8000.
Can you show us a printscreen for example of a single track in Engine Prime, analyzed with bpm info and everything and then how it looks loaded in the deck of MCX8000?