Federal Rules of Evidence enacted

When were the Federal Rules of Evidence enacted?
When did the Advisory Committee on Evidence submit its final draft to Congress concerning Rules 502 and 702 (separate responses using semi colons, i.e., Rule 502: 10-20-1999; Rule 702: 12-12-2011).
When was Rule 502 and 702 enacted (see separation notation in question 2.)?
When did Rule 502 and 702 take effect (see separation notation in question 2.)?
Does Rule 502 or 702 apply/affect cases previously filed prior to its enactment (see separation notation in question 2.)?

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