I have read that, and both of those blurbs are also inclusive of the other other FA limited lenses and points out the features without distinction. Does the FA43 Limited also have an aspherical lens and a floating element in its design? - No, it doesn't*.
From my first hand experience, the FA31 isn't particularly well corrected at close focusing distances (the FA77 is). I'm prepared to admit that there may be some elements that may be moving more than others as the FA31 focuses - it is hard do discern from appearances without complete disassembly of the lens with a close study of the internals.
This image from Bojidar Dimitrov's site adds to the confusion:
Amongst all the other features being highlighted, Where are the floating groups?
*there was a rumor that the early FA43s had an aspherical element - but that has been incontrovertibly proven to be a hoax.
Last edited by Digitalis; 12-16-2014 at 10:34 AM.