I uploaded a custom invoice template and mapped all the fields, but the <billingtaxnumber> field adds the words "Tax Registration Number" on my invoice instead of just the numeric code.

Some of my invoices aren't in English and I have the foreign language equivalent of "Tax Registration Number" hardcoded in the docx template, hoping that QBO will only append the number from the customer profile there.

How do I overcome this bug? I don't want to manually look-up and type this number when issuing invoices.

PS. I also tried saving the number and the wording as a shipping address (I don't normally use this field), but then QBO appends the customer name, when using the <shippingaddress> placeholder in the template. This appears to be another bug.