Help on simple Pension Q

FV of Plan assets - $1100 PBO - ($2250) ----------------------- Funnded status - ($1150) ----------------------- unrecognised prior service cost - 920 Unrecognised actuarial losses - 160 -------------------------- net pensin liability on B/S = ($70) Okay so the question is WHY under IFRS and old US GAAP do you add the 920 and 160 to the funded status. Surely you are trying to adjust for the crap that is slowing getting ammortised out of shareholders equity so that you’ll have a true figure for your balance sheet liability? I have read the “simple” example in schweser but I just don’t get it. Could someone PLEASE explain. Cheers