After updating to 5.15.1 I find that our membership contribution page has duplicated a couple of membership types and added "-old" to the type name. This is ridiculous confusing to the users. I don't find a way to fix this using the contributions forms, the "-old" options do not appear so I can delete, and I don't know which database table holds this information. I would just delete rows from the database to fix this so the duplicated membership types are deleted.
Edit: okay I found the civicrm_membership_type table. There are no types with a "-old" extension! What is going on? Perhaps I should delete and recreate the contribution page. What then happens to the financial ledgers? Will I destroy data? You can see the problem on this page https://idahonativeplants.org/?page=CiviCRM&q=civicrm%2Fcontribute%2Ftransact&reset=1&id=7