I'm installing a test 2018 system for a client.

The client has over 25 companies, and all of them have payroll data.

Question is this...can we set up the earnings and deduction codes in the test system and save the associated files?

Then, when we go live, we will not have to assign tax rules to all of the earnings and deduction codes.  We would convert the data and replace the earnings/deductions files with the saved copies from the test system.