David "There is a plan that AMOS will still generate ZIP packs containing the most recent translation for higher versions. So in this case, language packs for Moodle 2.2, 2.3 and 2.4 would contain [hotquestion.php] from the 2.1 pack. That would allow admins to use older version of a contributed add-on in higher versions without relying on the maintainer."
That is a very good idea, that would be extremely useful for many administrators and translators.
Cheers