diff --git a/rattail_corepos/importing/corepos/api.py b/rattail_corepos/importing/corepos/api.py
index 8adab57..9f1d01e 100644
--- a/rattail_corepos/importing/corepos/api.py
+++ b/rattail_corepos/importing/corepos/api.py
@@ -170,9 +170,8 @@ class CustomerImporter(FromCOREPOSAPI, corepos_importing.model.CustomerImporter)
         else:
             raise NotImplementedError("TODO: how to handle member with no customers?")
 
-        return {
+        data = {
             'corepos_card_number': card_number,
-            'corepos_account_id': int(customer['customerAccountID']),
             'number': card_number,
             'name': normalize_full_name(customer['firstName'],
                                         customer['lastName']),
@@ -184,6 +183,12 @@ class CustomerImporter(FromCOREPOSAPI, corepos_importing.model.CustomerImporter)
             'address_zipcode': member['zip'] or None,
         }
 
+        if 'corepos_account_id' in self.fields:
+            account_id = customer.get('customerAccountID')
+            data['corepos_account_id'] = int(account_id) if account_id is not None else None
+
+        return data
+
 
 class CustomerShopperImporter(FromCOREPOSAPI, corepos_importing.model.CustomerShopperImporter):
     """
@@ -201,6 +206,7 @@ class CustomerShopperImporter(FromCOREPOSAPI, corepos_importing.model.CustomerSh
         'phone_number',
         'phone_number_2',
         'email_address',
+        'account_holder',
     ]
 
     def setup(self):
@@ -305,6 +311,7 @@ class CustomerShopperImporter(FromCOREPOSAPI, corepos_importing.model.CustomerSh
             'phone_number_2': shopper['altPhone'] or None,
 
             'email_address': shopper['email'] or None,
+            'account_holder': bool(shopper['accountHolder']),
         }
 
         # truncate phone number data if needed