I can't see object links in my Insight (Assets) schema

[Anthony Pearson]

I have an insight schema where I can't see object links, in graphs or the Assets macro.

I can select the schema's objects in other schemas. I can select other schema's objects in this schema.

I've checked the 'Allow others to select objects from this schema' and all other options look the same as other schemas where I can see object links.

You can see in my grab lotso f object links (Customer, Product, etc.) but no links in the graph.

What have I missed?