Line items which reference a master variant is a scenario that in theory shouldn't have been valid or even possible for at least 5-6 years, and these old bits of data in theory should have been cleaned up at the time those changes were made. But a couple of servers have some really old data that's not in a nice state.
Here we can just flip the is_master flag to false for those specific (legacy data) cases before deleting any other master variants, to keep the legacy line item data intact.
These shouldn't technically exist, but apparently they can be present if the dataset is old enough. They can trigger a foreign key violation if they are present when a master variant is deleted, so they need to be dropped if present.
These shouldn't technically exist, but apparently they can be present if the dataset is old enough. They can trigger a foreign key violation if they are present when a master variant is deleted, so they need to be dropped if present.
