(2) Reimbursement payments made pursuant to this section shall be deemed to satisfy any deficiency, together with any interest and penalties thereon. If a nonprofit employing unit elects to make reimbursement payments under this section, any payments previously made to satisfy that deficiency shall be credited to the reimbursement payments for which the nonprofit employing unit is liable. If all liabilities for benefit payments to claimants are met, any payments in excess of the reimbursement payments required, together with any interest and penalties thereon, shall be refunded to the nonprofit employing unit. [1989 c.329 §2; 2005 c.218 §18]