Merging Addressable Data for 2 projects

Hi,
I have a project which act as a base for multiple games. I want to merge all the addressable group into one upon merging the project. how can I achieve it.

I will explain the situation briefly. Let's say I have unity project named Game A and another project named Main Project. So I have included the GameA as a submodule in Main Project and have done a SymLink to access the Game A project assets in Main Project. The issue is that when I include the Game A its Addressable Assets get deselected automatically. I want a way to merge all the groups or create different setting