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Old Cancelled Cards
FICO 08, a newer fico formula that many lenders are simultaneously switching to now, ignores artificially lengthened credit history/score by piggybacking. So don't feel left out in that regard.  Average age of accounts is affected when closed accounts fall off your credit report, which can take 7 years, not just by closing them. But I'm not familiar with the latest "weightings" of these things, so its tough to say how significant it will be when that happens. There are also newer FICO formulas, that may become relevant 7 years from now, so it is definitely something to be conscious of but they aren't immediately consequential, since you can do other things to improve your credit worthiness in the near term.