I resolved this with a call to Lacerte. 

I need the steps to follow once I amend the 2018 return to take advantage of Bonus Depreciation for QIP that is now available. The original 2018 had Sch 179 depreciation that was carried forward from 2017 that will now be carried forward to 2019 after the Bonus Depreciation is applied in the amended return.

I will copy the original 2018 return and amend the copy.

Do I then proforma the amended 2018 to 2019 and prepare the 2019 from that copy? Should I change the client ID back to the original ID?

Am I missing anything?

TIA