There doesn't seem to be a way to edit or add machine details to a location anymore, unless I'm missing something.
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Your browser/os information:
Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.99 Safari/537.36 (this will help us make sense of your bug report)