SAP PI 7.31 pointing to a central SLD on 7.0 version

Hi Experts,

We are in the process of starting the migration from PI 7.0 to PI 7.31 EHP.

With the help of basis team, installation of SAP PI 7.31 EHP is done successfully. Migration is to be done few months later, so to avoid maintenance of two SLD's we want all new systems(7.31) to point to the central SLD which is on the old system(7.0)?

** Old System(7.0) is having the central SLD.

** New System(7.31) is installed as a local SLD, but can be moved to the central SLD later.

So, is it possible that all new systems(7.31) can point to the central SLD which is on the old system(7.0)?

What would be the impact and other ways to handle such situation?

Thanks.

Regards,

Nidhi Srivastava