Make a partly-undone import retryable, and refuse a plan it cannot deliver

scripts/site_imports/winc/dry_run.py

@@ -56,6 +56,7 @@ from dotenv import load_dotenv
 load_dotenv(Path(__file__).resolve().parents[3] / '.env')
 
 from scripts.site_imports.approval import build_packet, format_packet
+from scripts.site_imports.winc import writer
 from scripts.site_imports.suggest import suggest
 from scripts.site_imports.resolver import (
     BLANK,
@@ -375,7 +376,8 @@ def main(argv=None):
             'winc-machine-adoption', plan, summary,
             [('businessunit', 'businessunit_status', 'raw_eq1',
               'businessunit_name'),
-             ('location', 'location_status', 'raw_location', 'location_name')])
+             ('location', 'location_status', 'raw_location', 'location_name')],
+            creatable=writer._CREATABLE_GROUPS)
         print('\n' + format_packet(packet))
 
     return 0