Bw transport translation

Hello all,

we have  3 systems in ERP ( Dev client 100 ,QA client 200 ,PRDnclient 300) and we transport stms in erp is dev client 100>> to QAclnt 200 , dev to clnt100 >> PRD clnt  300 

and we have only 2systems in BW clnt 100 one for DEV clnt 300 and  other for production :

1st we connect  BW DEV client 100 with ERP DEV client 100 and ERP QA client 240  ( where 240 copy from 200 but have truE data to test )

2nd we replicate data sources from clnt 240 to BW clinet 100 inorder to test

3rd now my question:

*how can i use  Transport seeting BW ( tcode : RSLGMP)  in both BW DEV WITH CLIENT 100 and BW PRD  CLIENT 300 >>>  what will be orginal sourcesystem and target source system ??

thanks