Again, I am not convinced. X1 does not have any new plug-ins (FX or VI). So, if the ProChannel isn't changing the load demand (that is, when it's disengaged), then I don't see why a project which operates fine in 8.5.x would not in X1. I don't recall an instance in which an earlier version project would not run in the most current version. But here again, there is no convincing evidence to that effect. Robin's response has not been all that convincing either.
Just consider what's at stake here, time and money. Now all I can do is wait to see how X1 actually plays out for other users whom take the chance. And if it doesn't work out for those unfortunate fellow SONARites, then all I can do is look for the alternative(s).
Kind regards,
Living Room Rocker
edit - P.S. I'm being a flat-liner, but I am excited to see the new SONAR. Now I am nervous about throwing in my ante for X1.