Board Thread:General Discussion/@comment-103.8.194.84-20151019093953/@comment-6881629-20151019102006

When Stealing Plans starts the dungeon its in should instantly reset, but it may not be in the same place some radiant quests will block others just in case they pick the same location (because of the reset). You could complete the sword quest then save before talking to Aela if there is a problem reload and hopefully get a different location.