Grind grind all over again!!! 
If the rest of you haven’t gathered the painful truth from the eulogy yet, our Beta characters won’t transfer to the final version of Destiny. The vaults have been cleaned out, too
Since the Beta, we’ve continued to tune and adjust the game. The way you earn experience has been adjusted up and down a bunch of times. Items have been added and removed. New features toggled. Although there’s no single monumental change, the sum of the tweaks leaves characters from the Beta Build in strange shape that would be confusing at best, broken at worst.
http://www.bungie.net/7_Bungie-Weekly-Update---08082014/en/News/News?aid=12034
