Changes recorded to soap projects without saving

If I right-click a project, I can save that project.  It would be my expectation that without specifically saving all projects or a specific project, no changes would be made to any project.  That does not appear to be the case. 

What I am finding is that if I change the contents of a soap project for a one off test, that change is still present after I close and reopen SoapUI Pro.  I have looked for an autosave feature and cannot find it. 

I have a great number of property transfers and expansions.  This behavior is wreaking havok with my testing.  Is if possible to alter soapUI Pro so that when I make changes and close a project without saving, it will load the project next time without those changes present? 

The response to this request will pretty much determine whether I continue to use SoapUI Pro.