23B Updates for OTL has "Time and Labor and Absence Management Integration Enhancements"
Summary:
In 23B Updates for OTL has "Time and Labor and Absence Management Integration Enhancements", which is to execute a process My Client Groups > Payroll > Flow Submission page, search for and click "Run Feature Upgrade" for "Time Repository for Absences".
Oracle has mentioned that "If you're already using Time and Labor and Absence Management, you need to upgrade to the new integration architecture. Running the migration process in step 2 isn't required for new implementations that don't have any absence data to migrate."
On each testing cycle, we do migrate Absence and time card data from non-fusion cloud system into Fusion Absence and OTL. Since we are still in the process of implementing (haven't went live yet).