[ADD] simplify payment term

migrations/16.0.4.0.0/post-migration.py

@@ -6,6 +6,8 @@ from openupgradelib import openupgrade
 @openupgrade.migrate()
 def migrate(env, version):
     # Initialize account.payment.term days_offset field
-    for term in env["account.payment.term"].search([]):
+    all_terms = env["account.payment.term"].search([])
+    all_terms.filtered(lambda term: not term.company_id).write({"active": False})
+    for term in all_terms:
         balance_line = term.line_ids.filtered(lambda line: line.value == "balance")[0]
         term.write({"days_offset": balance_line.months * 30 + balance_line.days})