Renoise Syncronising Tempo Changes With Sonar?

Hi folks. I had a play with Reaper and yes you can sync to Renoise pretty easily. I had a good experiment with Cubase and discovered that if you make Renoise the Master, yes, you can record your midi output with Cubase as Slave but…

How do you record tempo changes? In other words, if I have Renoise changing tempo during playback… How could this tempo change be picked up by Cubase or Sonar?

I have a demo of Sonar here… I am under the impression that you can’t do what I want in Cubase but… perhaps you can with Sonar?? Vv was telling me that Renoise doesn’t send MTC sync messages but SPP.

Any ideas anyone?