There’s still a lot of data that won’t change between your existing SAP On-Premise system and what you’ll want to be moving towards in Employee Central Payroll or S/4HANA Private Cloud Edition. The Nexus Suite can be used to select only the relevant configuration tables (filtered down to specific field contents) as well as specific employee related master data and results (i.e. only the current records etc.). Why not contact TIK to get a demonstration on how this approach will accelerate your implementation.