Adding bars and moving time signatures in midi project

I have a project which starts in 4/4 and then switches to 11/8 time. I’d like to add some bars in the first part. Right now I am trying to select all tracks and insert time with the option for moving meters and time but the time changes are not moved. I am using Ardour 6.2 on Linux.

Am I doing something wrong? Is there an easy way to add bars and moving the rest of the project to the right without completely destroying time signatures and timings?

Thanks