@John_at_Steinberg had sent to me the updated version of the Expression Maps for the BBC SO Pro (Thank you very much, John!). Now the Muted Articulations work as expected.
Currently the only missing that I have are Combined Techniques like Legato+Thrill( to trigger Thrill patches mid slur, or at the end of legato/slur) and Legato+Muted (which triggers Long Muted).
@John_at_Steinberg told me that, in his opinion Legato+Тhrill sounds a little bit dis-joined to him, probably that’s why he left the performance of the thrills to Dorico, which sounds too robotic.
Personally to me Legato+Thrill sounds fine, not dis-joined, but still I decided to investigate a little bit the issue that appears to John. I have noticed that if there is Legato/Slurred passage and Legato+Thrill is involved in the middle, or at the end, the thrilled note is slightly dis-joined in the Play Mode > Played Durations. The tiny midi note overlapping, which is typical for the slurred notes missing.
I suggest a small Feature Improvement here!
When Combined Techniques like Legato+Thrill are involved mid-slur, or at the end of the phrase the triggering of the normal Legato patch should be disabled, but the midi note overlapping must be preserved!
I hope John and the team will think about to improve this situation!
After all when we are using such libraries, like BBC SO Core, Pro, or Orchestral Tools - Berlin Series, we need as much as possible decent sounding Audio Exports which can be then included into a final product.
If we need just to score for live musicians, then we can just use NotePerformer.