Page 47 of the Vienna MIR Pro User Manual V.1.2 describes "Separating MIR's Dry and Wet Signals" -- a very useful technique. For example, in my case I have a full orchestra mock-up in VEP Server 7 with 58 channels using MIR Pro, and per the above, I've routed the wet portion of each instrument's MIR wet signal to a single "MIR Wet Bus". Unfortunately, if I then try to solo one channel (e.g., French Horn I), only the DRY signal gets soloed. All 57 other instruments continue to play in the MIR Wet Bus, totally defeating the purpose of soloing.
The only workaround is to solo the instrument AND mute the MIR Wet Bus. But then you hear the instrument dry only.
This has got to be a bug (or design oversight) because it fails the "most obvious behavior" rule of software. But perhaps nobody has been clamoring about it because if you choose NOT to split wet and dry in each channel, but use INLINE on all channels, solo works as expected.
In my case, I don't want to use INLINE because the channel fader (in VEP or downstream in my DAW) is then also controlling my reverb tails, which is unnatural and unwanted.
Others are posting their Xmax wish list in one thread. Mine is that solo in VEP actually solos both wet and dry feeds from MIR Pro in a channel. I'm begging you! 😊