Did a clean install of Sierra when it was released. Backed up key personal/financial/etc data to an external drive. Had been using Time Machine as well to a Time Capsule. Seems there's one thing missing from the external drive that wasn't backed up when I did it manually. I did not wipe the Time Capsule when I set it up to work with Sierra, having done a clean wipe to upgrade from El Capitan. My question is: is there a way to go into Time Machine to go back to days when El Cap was on this machine to restore the file in question? I don't want to roll back to El Cap -- it's just one file. When I go into TM, I can browse back to the day of upgrading to Sierra, but not before it. Wondering if there's something I could do otherwise. The only thing I can think to do is to clone my current install to an external drive, do a recovery boot and restore from Time Machine which will take forever, save that file, and then re-clone my current install to the internal drive. Needlessly complicated. Unsure if Migration Assistant could be used to manually restore/migrate from a particular backup dating back a month or so, but not since then. Thanks in advance.