How to add the Recovery partition in a System Backup too?

[pstein]

After starting a System  Backup Hasleo Backup Suite presents me all found partitions.

The Windows 10 partition and the ESP partition are pre-selected (=shown with a checkmark in checkbox).
Unfortunately the 0,49 GB Recovery partition is NOT pre-selected.

Moreover when I tick into the corresponding checkbox it cannot be selected.

Why?

How can I perform a System Backup WITH Recovery Partition?