If this has already been asked and answered, I apologize.

Using BiaB Ver. 2012, Build 349.

Started out song with Style _BGMEDLY.

The style starts with Fiddle Rhythm # 428 in the Strings track.
In a 'B' or 'C' part, the rhythm fiddle converts to a solo fiddle.
All fine.

But I wanted a mandolin, not fiddle.
So I assigned Mandolin # 599 to the Strings track.
Starts out fine, but doesn't change in either 'B' or 'C' like the fiddle did.

So, we can't use a different R/T instrument in multi-style songs?

Thanks.