Why can't the absence module handle the previous date in the notifications in case of an update?

Summary:

Why can't the absence module handle the previous date in the notifications in case of an update?

Based on the current design of the absence module, the approver will not be able to know the previous dates in case the employee updates the leave and submits the request for approval. This is a fundamental request functionality that when I'm trying to update any existing data in the notification, the approver should see and view the current data and the proposed one, and this already exists in the assignment changes, promotions, transfers, and personal information data.

Below is a screenshot of any updated leave from the employee submitted to the line manager. Can anyone tell me what was the original absence dates?