Same Business system to two XI/PI landscapes and possibly two ESR's

Hello,

We are setting up a new PI 7 landscape in parallel to our current XI 3 landscape.

We do not foresee a migration of XI to PI in the short run so the two systems, XI and PI will run next to each other.

The problem we then have is with the ESR and proxies. The same business system must be able to connect to both XI and PI and must also be able to generate proxies with interface content from XI as well as with interface content from PI.

The connection from business system to ESR repository seems to be 1:1, only one ESR per business system (defined via SXMB_ADM)

Is there a way to allow ESR content from two XI/PI systems in one business system simultaneously?

How do we solve this issue?

Thanks

Tom