This may be something that has been posted previously. If so, I apologize.

Will BiaB 2017 run on High Sierra OS?
My issue is that I use a MacBook Pro for my music and run Logic Pro X as my main OS. With the recent advent of update 10.4 for Logic, which has TONS of new updated features, I wished to update. I use El Capitan as my Mac OS. Didn't want to update further due to issues of 3rd party plugins potentially not working with an update to Sierra (next Mac OS update from El Capitan). I found, in attempting to update Logic, that 10.4 will not update with El Capitan, only with High Sierra OS (since Apple pulled the Sierra OS).
I'm currently able to update to High Sierra on my Mac, but am concerned that BiaB may be bricked if I do. I run Biab off the external HD (I initially purchased the Ultrapack Plus version shocked on external drive). I'd be willing to bite the bullet on some 3rd party plugins not compatible with High Sierra, but don't want to lose BiaB.
Any suggestions or comments, BiaBers?