Official comment
@Reese > We have provided various feedback on the Automix function to the rekordbox team, including the ability to custom assign mix points / duration / etc.
However, that said, in my testing (5.3.0), the track certainly does load and cue to the first hot cue or memory point on the track in the Automix mode. Are you absolutely certain you had no other memory or hot cue points before the intended "first" point?
Regarding your question about importing those points, rekordbox has the ability to do that when importing an XML file, however MiK doesn't write an XML file, so you'd have to use another 3rd party tool to convert the Traktor NML file to an XML file.