CTS+ Config Non ABAP Communication System and Domain Controller

Hello Experts,

I need your advice concerning a CTS + Configuration issue.

We have a SAP solman landscape with dev qal prod where prod is a domain controller.

On Qal we have connected a non abap landscape SO1 SO2 SO3 (PO Systems), and we try to activate charm project.

In TMS configuration,  we defined SolMan QAL as Communication System.

Charm project has been activated successfully.

We would hope that QAL will be the transport organizer, driving cts project and transport request.

We are surprised to see that solman prod(domain controller) was the transport organizer and cts project (IMG Project created in Prod instead of Qual).

So we are confused because the parameter "Communication_system" is not respected.

Maybe we missed something.

Thanks a lot for your return.