EREC: Question concerning system landscape

Hi all,

I'm looking for someone who has excperience with a systemlandscape like this:

development-system: one frontend-system and one backend-system

quality-system: one frontend-system and one backend-system

produktive-system: one frontend-system and one backend-system

training-system: only one system (backend=frontend)

The customer has no transport connection between the frontend- and backend-systems. There are transport connections between the frontend systems and the backend systems.

The question is: which transport requests go into the training-system? Do we have a problem, when the frontend- and backend-transports go into the training-system?

Thanks in advance!

Regards

Chris