BF4 Bugged on Campaign Mission

OK, for everybody who is having difficult time completing ANY missions on Hard. I somehow discovered a way to get easy mode on hard, i'm not sure how i did this.

I was playing the first mission on Hard a second time after my save files was randomly deleted due to the bugs, but i could not get past the helicopter right after the elevator, so as i was cursing in all sorts of languages i quit to main menu, prest ''start new game'', and selected Hard, BUT!!!!!!!- somehow i started the mission with the score from when i ragequit a minute earlier, i killed the six dudes from the window in the beginning of the mission, and pressed start, and it said i had 55 kills :S and later when you get copper backup, i got shot a million times, and i started regenerate health, like i was playing easy. I don't know how i did this, but every mission after that one is also easy on hard mode. Hope this helps all off you out with this **bleep** filled game, go crazy, try out the ''glitch'', be done with the SP, and lets hope EA or Dice or who the hell else don't see this and desides to all of a sudden fix the singel player and remove the glitch. 

BTW, sorry if my English is like **bleep**....