Transporting objects in PI

Hi I am a basis consultant and have just completed an upgrade from PI7.1 to PI 7.3. Everything works well except the transport system.

Error

I inherited this system and I am trying to get the transports of objects to work. We have a PID .PIQ and PIP PI system with each of them having its own sld. 3 SLDs. The System has been configured with different business systems. Example Is the one we are having issues with. We have 2   BS on dev SLD and QA SLD   called BS_DHR_600 and a BS BS_QHR_600. Transport would be to export from BS_DHR_600  to BS_QHR_600 I have create groups called PI_DEV  the Dev. SLD 

( p3) and the QA SLD. There is 1 integration server Business System on each SLD with its own SID (p1)

I cant seem to add groups to the BS.. See  (p2)

Question DO I add the group on the QA sld or DEV SLD . I fi click on the target BS I see all the groups that is attached to it

Appreciate any help

Thanks

Morga Moodaley