Hi @Alan
Thanks for all the info, but after reading the above, I don’t understand what the issue is.
The issue is related to importing data. Perhaps you could elaborate more on this? Is it a custom importer or a known plugin? Why is XMLRPC important?
What data are you importing? values? fields?
Can you confirm that the field reference is created for each value saved to the DB?
You can learn about the reference field by reading the docs on update_field
Thanks
E