Hi and welcome to the forums!
Are you using the reaktor drums standalone? Try using them as plugins within Logic, then solo that track and choose File > Bounce...
Tick 'add to audio bin' too.
Hope that helps
No probs. The method I explained before us good to render your performance to audio...
However, you can play yor beats/patterns and record them live to the software instrument track. Simply hit the Record button in Logics transport and play the beat.
Or you can program the beat by creating a MIDI region and opening the Piano roll and using the pencil tool to input notes...
Hope this helps,