5 December 2019
You can now 'roll back' a content import. When pressing 'undo', if the last edit was a 'content import', the imported article will be rolled back to the previous article that was imported (if there is one).
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Undo, and redo a content import
"This will be easy!"...takes 3 days
https://twitter.com/graeme_fulton/status/1191365268330692608