Search for changes

Hi

I have made an error, and might have made changes to the wrong project (an old backup). Is there a way to see what changes these have been? In the sync folder in the binder two chapters are selected. Does that mean changes have been made here? Or is that not necessarily the case?

PS in order to avoid this, from now on I will be clicking on the correct project that will open Scrivener, instead of the other way around. Or can I setup Scrivener so that it doesn’t open up the last projects automatically?