On or before the expiration of the Trailing Documents Delivery Date as to a particular Advance, Borrower will deliver to the Custodial Agent a copy of the original recorded Assignment for such Advance substantially in the form and substance of Exhibits A-1 ,   A-2 and A-3 (attached hereto), as to each of the Timeshare Project s , respectively, assigning to Lender the Notes Receivable and Purchaser Mortgages against which Lender made the subject Advance.