9.2.3.   SUBSTITUTION WITH A USE WITHIN THE SAME CLASS
   An existing may be substituted with the same use or another use from the same Class without affecting the nonconforming status of the use or on the property. The substitution may be approved in accordance with Section 3.3.3, PDSD Approval Procedure, if the substitute use complies with Section 9.2.4.B, .C, and .D.