The new profile will be clean and empty. Since we know the previous profile is from a newer version of Firefox there isn't a way to copy its data without running the same risks as current downgrades. Users can use Firefox Sync if they want to share data between profiles. The old profile is not deleted though.
On Fri, Oct 19, 2018 at 10:02 AM bruno ais <brunoa...@gmail.com> wrote: > When creating a new profile to accomodate the downgrade, is the previous > data deleted? Are there options to keep the old profile for just in case or > selecting to use a new profile cleans the old one completely? > > On Fri, Oct 19, 2018 at 2:43 PM mhoye <mh...@mozilla.com> wrote: > >> >> >> ------ Original Message ------ >> From: "Dave Townsend" <dtowns...@mozilla.com> >> To: "dev-platform" <dev-platform@lists.mozilla.org>; "Firefox Dev" < >> firefox-...@mozilla.org> >> Sent: 2018-10-18 3:32:36 PM >> Subject: Coming in Firefox 65: Dedicated Profiles Per Install and Profile >> Downgrade Protection >> >> In Firefox 65 we intend to ship two new features to help prevent user >> frustration caused by using profiles created by newer versions of Firefox. >> >> >> This has been a serious problem from a community participation >> perspective for a while now. Making it safe and easy to flip back and forth >> between versions of Firefox will make casual participation in testing and >> QA, among many other things, hugely easier and more accessible; I'm quite >> grateful that we're doing this work. >> >> >> - mhoye >> _______________________________________________ >> firefox-dev mailing list >> firefox-...@mozilla.org >> https://mail.mozilla.org/listinfo/firefox-dev >> > _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform