I'm new user, i just used two time FBackup 4 and find it very useful. When I save files in mirror mode, I see that all files are copied even if I edited only few of them since the last backup. I have lots of data and I need 30min to backup everything, it would be easier and shorter for me to backup only files that have changed since the last backup (I have to do this backup three time each day). How can I do this ? thank you per advance, sincerely.