7-13-123. Restriction on assessments following change of boundaries. Nothing in 7-13-113, however, shall permit the assessment of the cost of any such system against the lands remaining in the district after any such boundary change at a rate per square foot higher than the rate per square foot which would have been so assessed if the entire cost of the improvements as estimated in the resolution of intention had been assessed against each lot and parcel of land included within the boundaries of the district as described in said resolution of intention unless a new resolution of intention to recreate the district is adopted and a hearing held thereon upon notice as required for the original resolution of intention.