yes you get exp from 2.0 content to lv 50 but noone knows yet if you get exp from lv 50 may get from lv 50 monsters and lv 50 fates, but some if not all 2.0 lv 50 dungeons will be locked to give exp to lv 50 for some time from june 19, no ide how long that will be in place. your second question i don't know hope that helps