[Ord. No. 388 Art. XII § 4, 8-7-1980]
A non-conforming use, if changed to a conforming use or more restricted non-conforming use, may not thereafter be changed back to a less restricted use than that to which it was changed. If any property is hereafter transferred to a more restricted district by change in the district boundaries, or the regulations and restrictions in any district are made more restrictive or of a higher classification by amendment to this Chapter, the provisions of this Chapter relating to the non-conforming use of buildings or premises shall apply to buildings or premises occupied or used at the time of the passage of such amendment.