I understand. I'm not sure of the solution. Yes, BIAB is limited to time signatures of 2/4, 3/4 and 4/4, so all other time signatures are simulated by variations on those.

Are you exporting Music XML from Sibelius, and importing that into BIAB? If you are working with MIDI, try the Music XML instead.


BIAB 2025 Win Audiophile. Software: Studio One 7 Pro, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus 192 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.