It's an old problem, that Noel96 gave a workaround for in 2017.Bug got fixed in BiaB 2018 build 519. But sadly came back in BiaB 2019 first build.
I've been in contact with PG Support now in the beginning of december.

And PG Support couldn't hear anything wrong, it sounded as it should.
I sent my last email 8 of december, and asked if they could try again or at least look in the notation window, where I clearly can see the problem. But no answer to this day.
The conclusion to this is that silvertones and I are doing something wrong. Because we can't assume that PG Support is both deaf and blind, can we. whistle (sorry, but I love this kind of MusicStudent humour)

Here is what I wrote to Support:
An old problem has emerged again in Band in a Box 2019 - 2020.
Reported to PG Music 2017-11-08. Forwarded as a bug 2017-11-10.
FIXED in Band in a Box 2018 build 519. 2018-06-19.
Now back again since the first build of Band in a Box 2019. And in Band in a Box 2020.

When I insert a rest in bar 6, with Bar Setting 2/4 with a Dm chord and change that to Am at bar 7, with Bar Setting 4/4, with no rest. See pictures below.
Then Band in a Box plays a Dm chord in the first beat of bar 7, instead of Am, beat two plays correct. I have Band in a Box 2020 Build 703.

And if I choose to let the hold in bar 5 continue into bar 6, Band in a Box doesn’t play anything in the
two first beats in bar 7.


Here's a picture of my first email to PG Support

by the way, Happy New Year to you All!

Attached Files (Click to download or enlarge) (Only available when you are logged in)
Band in a Box & Real Band 2023 (latest build)
Windows 11 Home - Intel Core i7-8750H - 2.20 GHz - RAM: 32 GB
Steinberg UR-RT4