What would you like to be added:
When changing --txt-owner-id on an existing external-dns resource, where --registry=txt and --policy=sync, it does not update the existing TXT records it owns, therefore losing ownership. Meaning that we have to manually delete the records in order to have external-dns take ownership again.

I would expect it to also change the ownership of existing records it previously owned in the DNS zone.

Why is this needed:
By default --txt-owner-id is set to default, if we change this value, the external-dns resource loses ownership of existing records it managed, because the TXT record is not updated with the new owner id.