Why are sketch files that are downloaded empty???

When I download or save and open a "sketch" the file is EMPTY. I asked this question before and got a reply that GRABCAD was looking into it. BUT it seems like my origional question has just disapeared, or at least I cannot locate it anymore. What gives?
Is kinda hard to help folks with Requests if I cannot get their sketches.
Any help GRABCAD?

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