Question: How to share raidlockout for later usage?

Hello everybody, sorry if it is silly question or so. I dont really get it :p Is it possible to get raid-lockout (progress) without participate on any boss and not need go right now when got party but keep it for later like save-keeper char for others.from friend and keep it for later.

example
player1 progress ulduar bosses up to yog but algalon so it should be like 15/17 or so, if i invite friend he can continue on yog or algalon, but to be saved he has to kill one boss at least, otherwise next time when he enter ulduar without player1 he wont be saved , so iam asking if is possible to get current progress and keep it for later without need kill anything?
currently iam doing it like: playerB want to be save-keeper for others after 10th boss so i invite him after ninth, he accept 9down save and as we kill next boss he will be saved, probably pretty lame but dunno better way :-/


or only way is not finish raid with playerA who will keep save for sharing?
kindly thanks

Tony

Check out this thread :)

http://eu.battle.net/wow/en/forum/topic/12440034373