diff --git a/src/pretix/base/invoicing/transmission.py b/src/pretix/base/invoicing/transmission.py
index 584a056e57..d852372718 100644
--- a/src/pretix/base/invoicing/transmission.py
+++ b/src/pretix/base/invoicing/transmission.py
@@ -99,7 +99,9 @@ class TransmissionType:
         return {}
 
     def form_data_to_transmission_info(self, form_data: dict) -> dict:
-        return form_data
+        return {
+            k: form_data.get(k) for k in self.invoice_address_form_fields
+        }
 
     def transmission_info_to_form_data(self, transmission_info: dict) -> dict:
         return transmission_info