The more I read the more confused I get.
**4)Licensing for employees when doing a parallel migration is it impacted?**
Yes somewhat. When you migrate your data over and start to do test runs, these tests will utilize your payroll tier license and still enforce that you do not exceed your tier. Sage 100 would still consider the new system a live system and will enforce the tier rules. However, when you re-migrate the same data it will essentially start the counter anew on those employees that were tested previously.
For example:
1) ABC Company is migrated and converted.
Employee 01-0000001 is now assigned EmployeeKey of 1a (this is a 32 character randomly generated key, but using 1a as a short example)
This company is setup to do some sample test pay calcs, which would record employee 1a as an employee that had been paid this month, so our employee count = 1
2) Next
Everything went well but we want to re-migrate ABC to the latest data
Employee 01-0000001 is now assigned EmployeeKey of a9, since this is a random assignment it is almost assured that this key will be different.
This company runs a payroll for the same month, this employee would increment the employee counter because the key is different.