Official comment
When you're using the R1 with rekordbox (in performance mode), the unit is in MIDI mode while connected by USB to your computer.
There is no mapping required, it's pre-configured for use with rekordbox.
The XDJ-R1 is not able to connect to the ProDJ Link network the same way other devices can. Export mode is only used to prepare and export songs to a USB device for use directly in the R1. The WiFi is for connecting the Remotebox app to control the R1 and navigate tracks from a connected USB device.
Unfortunately no, there is no play history on the R1 itself, nor through the Remotebox app. One downside to the unit.