Check your relationship graph for the exact TOs which are linked for the results you need, then go to your layout and verify these things:
- Your base TO for the layout is the correct TO from your graph which supports both portal relationships
- Your portals each reference the correct TO for the related TOs from the base TO of the layout.
The problem you describe is usually the result of one or both of the portal TOs not being in the correct relation to the layout's base-TO for the related records to appear.
- The fact that one of the portals works and the other doesn't, indicates that the portal TO that is not working is probably based on the wrong TO from the relationship graph.
Also verify that the fields on the portal are pointing to the same TO as the portal itself. Mixing portals with other TO's related fields (usually from changing the portal TO) can cause the fields to quit displaying until they are also repointed or recreated on the updated portal.
Thank you very much for the pointers. I have corrected the problem and it is showing both portals beautifully.