Hi

The issue is this:

I compose a song in BIAB.
Instruments are:
Guitar 1,
Guitar 2,
Piano,
Bass,
Drums.

Bar 1 is set in Bar Settings (F5) to mute all instruments, except Guitar 1.
Bar 3 introduces Guitar 2.
Bar 5 adds in Piano.
Bar 7 drops in Bass.

And finally, Bar 8 plays All instruments, including Drums.
(I may be wrong about the exact sequence but you get my drift. It's a gradual build up).

It plays as expected in BIAB.
It renders out as expected as a WAV file.

However, when I Save A$ an SGU file and then import the SGU into Cubase (12 Pro) using the DAW plugin, and export as multiple Audio files, All instruments play from Bar 1.

I am stumped.
Anybody smarter than me let me know what I'm doing wrong, please?

BIAB 2019 Ultrapak (latest update).
Cubase 12 Pro. (Always latest update).
Steinberg UR44 audio interface.
Nektar Impact LX88 keyboard.
Windows 11 64 Pro.
Custom PC.
CPU AMD Ryzen 7. 3.5 GHz.
GPU Radeon RX 6700 12GB
32 GB Ram.