only 1000 tracks? Really?????

So, I've been using Dj software pretty much all of the time since 2009. 

I had 2000 series players over the years but really only used them in HID mode after having problem after problem using USB (why I switched).

Over the years with laptop, it's been great, and I won't be stopping anytime soon. But the past couple of years I have been playing at a Club using both Denon and Pioneer.

The pioneer equipment has been a nightmare and fails a lot, and I've had to swap and change a few rooms to cover last minute etc. (leaving my laptop). so, I decided to cover myself and have a couple of backups I can just grab and plug in, if need be, thus leaving my laptop set up in another room to go back to.

I decided to copy my entire collection from Serato to Rekordbox and Engine on two separate drives so I can be flexible.

Engine, no problem. I can use the software and the players no issues, just like I was using Serato, but on players with two screens. All my crates are all there and I can go through them just like I was using Serato.

Rekorbox, I just can't figure out how to get my entire library on one drive so its usable to me. Is it really the case that pioneer equipment can't read more than 1000 tracks from a crate/playlist?

Is it really that restrictive? Is there any way round this? As I want to export all my music to the drive the way it is set up on Serato and play it on pioneer equipment the way I have been since 2009.

How comes Denon can do it, but pioneer can't? Is there a hack or work around the 1000 limit restriction?