Unless otherwise agreed to by the annexing municipality and the affected town, when an order or other approval under this chapter annexes part of a town to a municipality, the order or other approval must provide a reimbursement from the municipality to the town for all or part of the taxable property annexed as part of the order. The reimbursement shall be completed in substantially equal payments over not less than two nor more than eight years from the time of annexation. The municipality must reimburse the township for all special assessments assigned by the township to the annexed property, and any portion of debt incurred by the town prior to the annexation and attributable to the property to be annexed but for which no special assessments are outstanding, in substantially equal payments over a period of not less than two or no more than eight years.