Quests should be doable in Raid < Patch 1.3

[Nolin7777]

http://wowwiki.wikia.com/wiki/Patch_1.3.0

[ratkosrb]

This is actually wrong, the patch notes don't mean what you think.

Quests that are not completable while in a raid group are no longer allowed if the instance is owned by a raid group, regardless of whether you are currently in that raid group or not. 

By the first phrase it is already clear that the restriction of not being to do normal quests in a raid did exist prior to the patch. What they actually changed is the ability to clear part of the dungeon in a raid group, and then come back with only 5 people to finish a non-raid quest.

Lets say you make a 10 man raid to clear half of one of the mini-raid dungeons like Stratholme (10 man before 1.10), Scholomance (10 man before 1.10) or Blackrock Spire (15 man before 1.10). Then you go in and kill a few of the harder bosses, and disband. Then later you come back with only 5 of those people in a normal group and try to complete some of the non-raid quests that require you to do something deep inside the dungeon. After patch 1.3, you can no longer do that. You cannot clear everything prior to the quest in a raid group, and then come back in a normal party to do your non-raid quest. If you killed anything inside the dungeon in raid group, this save now belongs to raid, and you may not use it to finish your non-raid quests.