If you Export website locally then Publish the changes, you should be using something like Filezilla where you can tell it to only upload the changed files.

No need to know or think it through.

You do not appreciate the interaction Xara has with simple things like changing a NavBar or adding a new image.
If you really want to get to grips with it, download Search Everything and create a Filter (C:\Users\[login]\AppData\Local\Temp\ !~* !*ARM* !*.tmp !tmp* dm:today).

Acorn