My client sold 2 different properties in exchange for 2 other properties. Relinquished properties were vacant lots and new properties are also a vacant lot. Couple of question. 1. Do I need 2 8824s? 2. If I complete 8824 does it carry to 4797 automatically?

Properties relinquished were in Houston and new lots purchased were in another city.

this is my first time doing an 8824.