Hi @ironj, I don't know any way to get the original assignment description back, except perhaps going to the BETA version, or TEST version of Canvas. Beta copies the content from your working Canvas every Saturday, so it depends on when you did this. Test is copied every few weeks so that's another possibility. Can you log into your beta? add beta in front of instructure.com, ie school.beta.instructure.com. Then you can copy the description, being careful with images and any internal links to correct the location from beta. I am assuming your assignment is not a discussion or quiz. Quizzes are rather unique.
If you are talking about submissions, were there any submissions? It's possible those are still there in the assignment.
I've found great success at always copying the copy, never copying the same item more than once. I hope that will work for you too. You do have to keep track of the order you make copies.
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