when you close the page, make sure you’re really using a “close page” action and not the “cancel changes” action. Cancel Changes will in fact roll back any changes that were made, whereas Close Page will simply close the page.
To configure the default behavior of the little “x” button, check the page properties for the property called “close action” and make sure that it’s also set to “close page”.
I hope this helps!
Edit with screenshot of generated ListView Select page:
See it in action: http://g.recordit.co/jv8j3EzU9v.gif