I made a duplicate of an existing space (A → B). I made some changes in B. A few hours later, I come back to A and most of the cards there are gone. I went to B, and I see the missing cards in B. So it seems like through that duplication process, some cards got misplaced 
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arg will investigate
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I just noticed this in another space and its duplicate. The origin space is missing the cards, many of them got moved to the dupe.
Original:
Dupe:
I did not remove any cards myself from the original
i couldn’t really repro but I made some changes to how spaces load after being duplicated which might address this. Let me know if you see this again
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