Absence updated or corrected data not available on notifications

Summary:

Currently when the employee update the existing absence record and submit it, request goes to approval.

Unfortunately, the notification only shows the proposed values of absence records, the person approving the request does not know what has changed, so he has a problem to decide whether to approve/reject it.

We would like the notification to show both "Current" and "Proposed" values of absence record.

Adding such fields would significantly facilitate the daily work of Managers and HR in our organization.

Also this data needs to be available on back end or on tables so we can create reports