Has Anyone Migrated to the new Integration Architecture for Time and Labor and Absence Mgt?

Summary:

In the 23B What's New for Time and Labor, it mentions that "if you're already using Time and Labor and Absence Management, you need to upgrade to the new integration architecture". Has anyone migrated to the new integration architecture?

Content (required):

1) We are currently using both Time and Labor and Absence Management and are wondering how quickly we need to complete the migration to the new architecture once we receive 23B in Production.

2) Also, if we select 1/1/2020 as our migration cutoff date, will the system do the migration for all Absence data for Active Employees and Terminated Employees or will it do the migration only for Active Employees?