(1) If the personal debtor satisfies the creditor, the mortgage passes to the personal debtor to the extent to which they may demand compensation from the owner or from a predecessor in title of the owner. If the debtor is to be compensated only in part, the owner may not enforce the mortgage, to the extent that it has devolved to the owner, to the disadvantage of the mortgage of the debtor.
(2) If the claim and the debt are merged in one person, this is equivalent to satisfying the creditor.