LP lack of support for Firefox 57 is terrible. Must reenter emailAddr/PW every time.

So called new version released 1 Dec 4.2.1.21 doesn't work either.

I see several folks are switching to KeePassX and Dashlane.

What's your experience and how much trouble was it to migrate your LP data over to them?

Just checked Dashlane. They have a provision just for migrating from FF. See under "support"