Just tried repeat and fade, and it seems to work as advertised.

I copied the last 4 bars of a song to the end, and then appended a new repeat of 4 bars times 3 to the 'repeats and ending dialogue'. The song already had 3 endings so this was essentially an ending within the last ending.

I then changed the fade to 12 bars. Low and behold - it worked fine. It doesn't fade to zero, but it does fade


BIAB for Windows Version 2019 (643)
Windows 10 (1909)