You Cannot Automate Your Way Out of Bad HRIS Data

Every HRIS migration I've run starts with someone excited about the new platform and nobody excited about auditing the old data.

That's backwards.

If your current system has three different formats for employment type, duplicate records from a re-hire, and PTO balances nobody trusts, moving that into a nicer interface doesn't fix it.

It just gives the mess a better UI.

Clean the data first, migrate second.

It's slower up front, and it's the only way the new system doesn't inherit the old one's problems.