Currently when you do an extended Find across a project and choose to replace text, it is not obvious that your changes aren't saved when you close the dialog box, which would be the expected bahavior.
It wasn't until I had uploaded all the files in the project and was about to close the project (I had already closed all of the tabs) when I was asked if I wanted to save the changed documents! I had to go through to whole upload process again to commit my changes!
This behavior should be much more transparent to the user--either by automatically saving changes to files that are not open in tabs or to have a check box on the find/replace in project dialog that offers to save changes automatically.
Chris