We are trying to load Open Customer Invoices with Parallel Currency using the STDCIN2 template where the are 3 amount fields feeding in to N31 to N33

After swapping the amounts around a few times, it seems N31 does not appear anywhere in the Load ID’s created invoice, N32 seems to be assigned to Tax Amount In Parallel currency and N33 seems to land in Net Amount In Parallel Currency. This render us the problem that the invoice’s posting is empty.
Yes, we can adjust the value manually in the Posting Info.
But that sort of defeats the purpose when the we boldly presume the fields are in template for a reason.

So, we are reaching out to the Community, maybe someone had similar experiences or has an idea to a resolution - other than correcting it manually
Maybe there something obvious we are overlooking.