Joenol, I'm glad you found this, cause it is basically mixvibes saying what should be happening, but is not currently. Or, it's someone from the Rekordbox division saying what should be happening between the two softwares, without talking to the guy in the Cross division.
Both MixVibes and Rekordbox media collections use the same standard .xml format : Rekordbox users will be able to import their complete Rekordbox database into Cross/ CrossDJ including their cue points, hot cues, loops and beat grid info.
The response that I got in the thread that daniel posted was that
Cross doesn't write into other softwares databases but only into the medias so you need to reload/refresh from the other softwares.
Completely clashes with the other quote from the site. Also clashes with a few of the other things that were mentioned in that thread.
Also make note of the arrows on the picture that go both ways, not just import into Cross. The only catch is, they say "will be able to" not can currently, or can. So if this is possible, like your page says, when?
not familiar with rekordbox,,but heres a link that might be informative till support come in the A M french time 
