Rdi LPEX editor (workspace?)

Hi,

I've been working with Rdi 9.6 for a while now, and am setting up a new laptop that has RDi 9.8 on it.

I've encountered a difference that I'm hoping is a setting, but I can't seem to find what or where it might be.
It's kind of hard to explain without showing, so I've put some links to images of the two workspaces to help explain.

9.6
https://drive.google.com/file/d/1pfpRdSK7ozGcAuNPqqA_WzTDlw-cK4-s/view?usp=drive_link

9.8
https://drive.google.com/file/d/1YIudJ1ZnOaeXZES7NCqWxHmZWUs4O0Cx/view?usp=drive_link

In 9.6 I have a single workspace (if that is the right terminology), that I can add difference source files to. I can drag them and create different subgroups within that single workspace to group related source files, and when I open a new source, it always adds to the group I currently have active. Which is helpful for when working through a group of related programs

In 9.8 however I can't seem to get the source files to into subgroups. I can drag them out and create what appears to be new 'workspaces' which is close to the same functionality. However, whenever I open a new source file, instead of going to my active group, it instead opens up over in the original workspace (1).

Any ideas on how to restore that same setup in 9.8?

Thanks