Purpose: To release original borrower from liability under the mortgage. Distribution: Recorded original to Servicer.This assignment and assumption of lease agreement template transfers a tenant's interest under a Minnesota commercial lease to a third party. In the event the mortgagee or vendor requires approval of Buyer as a condition for allowing the assumption, Buyer. 24. This Standard Document contains provisions to incorporate an assumption of the delegated obligations and an optional novation into the assignment agreement. Forms are required to be filed in the county where the property is located. Mortgage assumption allows a buyer to take on the original loan balance at the original terms, but it doesn't account for any home equity the seller has built. In Minnesota, parties are usually allowed to assign their interests in a contract.