That’s hard to believe you actually lost it. Maybe you aren’t searching in the correct way. I use HoudahSpot, but don’t know if it would make a difference for you. Very flexible, very fast searches.
You certainly can kinda/sorta reverse engineer. Whatever you have at your server space should indicate both content and elements. You’d have to certainly start all over again, but the “recovered evidence” should great speed up the re-creation process.