Business and technical system in PO and PI

Hi,

  We have recently installed PO 7.5 and we are already using PI 7.11. We will be using the new PO for new interfaces whereas the old PI box would still be in use for existing interfaces. The query is, Should we create the existing technical/business system in PO 7.5 again as new system or is it better to import them from PI 7.11 SLD to have same GUID in both the system. This is considering the situation where if we migrate from old PI 7.11 to new PO 7.5 in future the busines/technical systems names should not give any GUID conflict or create 2 copies of it. Please suggest.

Thanks,

Amol