How do we enforce the 401k Catchup limit across multiple assignments?

Summary:

Using the seeded Oracle Payroll element Fast Formula (FF) and seeded Element Skip FF, the employee 401k Catchup is deducting up to the limit on both assignments - which results in the YTD balance exceeding the limit

Content (please ensure you mask any confidential information):

We use a single payroll relationship with multiple HR assignments. While testing the "super catchup" configurations, we have noticed that the Catchup deduction is limited at each assignment but not across the payroll relationship.

At first, I suspected our custom FF that were built six years ago. So, I reverted the 1/2/1951 FF back to their 1/1/1951 state (i.e. seeded FF code).