I could do it today. Its a very small add-on. In fact I'll go do it right now.
EDIT:
This should work. I can't properly test it so if you could that would be great. First place the achievements script under RMX-OS Options. Then place this add-on below the achievements script.
module RMXOS
module Options
SAVE_DATA[Game_System].push('@awards')
end
end
To test, Give the player an achievement, view the achievement in the achievements scene. Logout, log back in, open the achievements menu and see if you still have it.