No Investigation missions?
Okay so i'm playing through this as quickly as possible so I can finish before the AC3 comes out, I also have the other 3 games to finish, I have a system where I travel to a city, save all citizens, get all viewpoints, collect all flags and then finally assassinate my target, however I have just started memory block 4, where you have a target in each city, I checked in at the Bureau in Damascus and spoke to the assassin there, he told me about my target but after that there was no investigation missions on my map, it was the poor district which I had already played through, IE got all flags and killed my target, saved all citizens etc. The reason I went back to this district is because the middle and rich were still locked so I couldn't go there. Is there an order for the targets I need to follow? Any help would be good.