Business system not appearing in ID SAP PI

Hello Experts,

We are working on migration from SAP PI 7.3 dual to SAP PO 7.5 single stack. SLD content migrated from lower system by file transport. In single stack SLD we can find all business systems but some business systems are not appearing in ID. I have already tried ID --> Environment --> Clear SLD Data Cache but still they are not appearing as expected. Also the business systems are assigned to correct technical system.

Thanks,

Ramu.