How will IDR recognize Supplier Site for Supplier with multiple site addresses?

Summary: Supplier has multiple supplier sites and each site has a different address. But invoice has picked incorrect supplier site despite the address on the invoice image pointing to another site. The incorrect site that was picked is however set up as Primary Pay. Does this flag play a role in supplier site recognition over the Supplier Address?

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Version (include the version you are using, if applicable):

25A (11.13.25.01.0)

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