Idaho Code § 28-42-305: Conversion to open-end credit.

The parties may agree at or within ten (10) days before the time of conversion to add the unpaid balance of a regulated consumer credit transaction not made pursuant to open-end credit to the debtor’s open-end credit account with the creditor. The unpaid balance so added is an amount equal to the amount financed, determined according to the provision on finance charge on refinancing, section 28-42-303, Idaho Code.