Sophos for Linux savscan changes metadata of all scanned files

Hi!

When I run savscan on my new debian machine, meta data of all scanned files is changed. See the following test:

root@test:/home/gaga# touch file
root@test/home/gaga# stat file
File: file
Size: 3 Blocks: 14 IO Block: 512 regular file
Device: 27h/39d Inode: 9259 Links: 1
Access: (0600/-rw-------) Uid: ( 1000/ sbrauss) Gid: ( 100/ users)
Access: 2018-12-26 08:04:42.717810020 +0100
Modify: 2018-12-26 08:04:42.717810020 +0100
Change: 2018-12-26 08:04:42.717810020 +0100
Birth: -
root@test/home/gaga# savscan -all -ss file
root@test/home/gaga# stat file
File: file
Size: 3 Blocks: 14 IO Block: 512 regular file
Device: 27h/39d Inode: 9259 Links: 1
Access: (0600/-rw-------) Uid: ( 1000/ sbrauss) Gid: ( 100/ users)
Access: 2018-12-26 08:04:42.000000000 +0100
Modify: 2018-12-26 08:04:42.000000000 +0100
Change: 2018-12-26 08:05:10.857406250 +0100

You can see that command stat reports that meta data of the file has been changed.

This is problematic for me as it prevents a backup program from running correctly, it is no more possible to make differential or incremental backups.

Is there an option to savscan that prevents it from modifying scanned files?

Thanks

Stephan