Hi - same question -- did you bring evidence that the membership ended 10+ years ago like the old dues booklet, or just stated that more than 10 years had passed?
My spouse's interview is next week. For her too, it was just a couple months membership during college, then no more contact, meetings, dues, etc. We weren't able to get any official PRC documents, so our only evidence is that she has been saying the same thing for 12+ years about the dates. She even had disclosed this information before we met because she used to work at one of the U.S. consulates there and it was part of her security investigation.