Consult regarding updates in loading data into Assignment EFF
As described in 22D version documentation(Oracle Cloud hcm) , there gonna be a change in the way the EFF's Effective Dates will behave in accordance with the assignment effective date.
Reference: "PREPARE FOR CHANGES TO LOAD ADDITIONAL ASSIGNMENT INFO IN UPDATE 23B"
In my organization, we have a monthy scheduled upload into assignment EFF.
Each month, the upload includes records with data and Effective Start(1st of the month) and End dates(last day of the month) of the previous month for our uses.