Ok, so I can see when this might be a desired feature in some circumstances but is this a bug or desired function of multiple page feature.
I created my first page and then created a second page copying everything from the first. I then removed a background image from a container (that I only wish to be present on the home page) but quickly found that it also deleted it from the home page...adding it back on the home page adds it back on subsequent pages.
For now, I have to add an extra class to get around this issue but the framework I am importing into won't have this extra class so it will be another thing I have to remember to tweak later after export.
Would this be grounds for a feature request, maybe an option on elements class definition, something like:
Allow style changes to span multiple pages - enable/disable?