Did you read the articles in the links I posted previously? I will post them again.
https://www.journalofaccountancy.com/issues/2008/nov/depreciatepropertyinlikekindexchangesconsistent...
https://www.thetaxadviser.com/newsletters/2020/mar/deductions-like-kind-exchanges-cost-segregation.h...
In short, there are two options:
Option 1: Depreciate the carryover basis of property acquired during the current tax year over the remaining recovery period of the property exchanged. Use the same depreciation method and convention that was used for the relinquished property.
Option 2: Treat the adjusted basis of the exchanged property as if it was disposed of at the time of the exchange. Under this election, treat the carryover basis and excess basis for the acquired property as if placed in service on the date acquired.
