What do you mean by "lost"?
And "original version" of what?
I can no longer "find" "see" a 162 page book that was near completion. I was removing the numbers on pages when the book reverted to the initial layout. All of the changes I made were gone. All of the text was gone. All of the page layouts I changed were gone. I am basically starting over.
I am new to Lightroom. My technical expertise is limited. Unlike Photoshop, I could not,find a way to undue whatever mistake I made.
Sent from my iPad