‘Sec. 1. 36 MRSA §1482, sub-§5, ¶D, as amended by PL 1997, c. 175, §1, is repealed and the following enacted in its place:
D. If the credit available under this subsection exceeds the amount transferred to another vehicle, a municipality may choose, but is not required to refund the excess amount. If a municipality chooses to refund excess amounts it must do so in all instances where there is an excess amount.’