Recording schedule backup

This has come up before. I also thought the above, but when selecting a restore point and then clicking the restore button, an "are you sure"-type box pops up which says something like "are you sure you want to delete your entire schedule and favourites and replace with this backup". So which is it?
I had reported the duplication of entries in the past and at the time you thought that was the expected behaviour.

I tried again today and didn't get a duplication so I am not quite sure what the current story is - at times duplication has occurred on restore in the past - I don't know if the latest webif changes have corrected this.