Future Dated Changes impacting Secondments

Summary:

Hello

We recently encountered an issue with Future Dated Changes.

Scenario: An employee was added as a termination with an effective end date of 9/11/2024. This employee had 3 direct reports. One of those direct reports, in the interim, was starting a new position on the 8/11/2024 and this was added after the line managers termination.

On the 9/11/2024 we checked the system and all of the assignment details for the direct report, who had moved into the secondment had reverted back to the previous position details.

Is this due to the Synchronize Position process? Or due to the End Dated Record inserted into the system based on the Line Managers Termination?