Clean old history backup

Hi,

I accidentaly manually delete old backup files directly on the NAS, and I would like to know how can I delete empty backup entries in the Acronis console.

I see the backup entries on the console

But i get an error when try to delete them

The file doesnt exist anymore but they always appear on the Acronis console.

Thanks for you help and sorry for my bad english ^^

Regards,

Geoffrey.