Connecting multiple ECC Clients on same ECC system to BW system(s)

Hello.
We are considering connecting our Dev BW system to multiple clients on the same Dev ECC system. This connection would be for a limited time. We are wondering what the effect would be on the ECC system after we 'disconnect' our BW system from one of the clients.
Another thing we are considering is to create a seperate BW sandbox system and to connect that to a client on our Dev ECC system. The Dev ECC system will, at the same time, have a connection to a client on our existing Dev BW system. For example, having DEVBWcnlt100 -> DEVECCclnt100 and SNDBWclnt200 -> DEVECCclnt200 where DEVECC is a system and DEVBW and SNDBW are systems of their own. Our Sandbox BW system will have a limited life and at some point be taken down and no longer be a valid source system for the DEVECC system. We are concerned about what the impact would be to the DEV ECC system's client independent data once the Sandbox BW system is disconnected and taken down permenantly. Is 'residual' client independent data something we need to be concerned about? Is having two different BW systems connected to ECC clients on the same ECC systems a 'bad practice'? Any and all comments are welcome as we have not yet acted on our ideas yet.
Thanks very much for whatever comments you might provide,
Geoff.

We are considering connecting our Dev BW system to multiple clients on the same Dev ECC system. This connection would be for a limited time. We are wondering what the effect would be on the ECC system after we 'disconnect' our BW system from one of the clients.
No impact on the BW system. The only thing that you will have to take care of is that any process chains which fetch data from this DEV ECC system should not be put on periodic cycle because after disconnecting the ECC system, these would start failing.
Another thing we are considering is to create a seperate BW sandbox system and to connect that to a client on our Dev ECC system. The Dev ECC system will, at the same time, have a connection to a client on our existing Dev BW system. For example, having DEVBWcnlt100 -> DEVECCclnt100 and SNDBWclnt200 -> DEVECCclnt200 where DEVECC is a system and DEVBW and SNDBW are systems of their own. Our Sandbox BW system will have a limited life and at some point be taken down and no longer be a valid source system for the DEVECC system. We are concerned about what the impact would be to the DEV ECC system's client independent data once the Sandbox BW system is disconnected and taken down permenantly. Is 'residual' client independent data something we need to be concerned about?
Again no impact on ECC system. As for the client connected earlier to sandbox system, just clear all the queues in RSA7, LBWQ
Is having two different BW systems connected to ECC clients on the same ECC systems a 'bad practice'?
No its not at all a bad practice

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