Hi mediabw
The new update of JA Builder will help to save data into your database instead of depending on our server, with this way we can avoid any server issue (if any). Not sure what you mean by 'new format' here as the everything is still the same. If you installed the latest version of JA Builder, pls try to edit a page and compare with its frontend first, if everything looks the same, you can make any edit as you wish and publish the page.
Regarding to the revision, not sure when you updated + saved page recently, could you try to edit + save and check again?