The landing page is currently translated into English in a separated and independent page:

If we check the last revision, we also can see it’s in English (so the internet browser is not showing an old version of the page):

Unfortunately, when I edit the page with cornerstone, it edits an old version (or newer, depending on the viewpoint) of the page, in a non translated Spanish language:

I have been restoring old versions with WordPress because WPML was changing the translated version by the original version each time I modify the original version. Now it is set to translated it independently.
How can I edit the last version of the web page? Should I translate it all again? If so, cannot I use the restore system of WordPress? If so, how to backup the pages created with cornerstone?
Thanks
Carlos
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