Bodhi/Thieves quest looping chapter

Mabs

Side with Bodhi
do quest 1
do quest 2
go to kill Thieves master
get key from Gaelens body
attack guild house, get both keys and the button pushed
map appeared to reset as i came back across it after pushing button, was all black, thieves were all back in place
lost the key, so cant go out/back in (it vanished from inventory, i didnt drop it)
reloaded the point i first came in
killed guards inside first room
cant open door.. key is gone
return to Gaelens house
As i zone into Slums i get the "hello id like to talk to you about your friend in my house" spiel from Gaelen who is now very much alive again, and got the Chapter video/cutscene/log thing again
i still have the "kill the Thieves master for bodhi" quest in journal
Cohrvale outside the pub who i killed earlier is back aswell, so it appears to have pretty much reset the city map

im still the same level i was etc and have items so it isnt reverting a save or anything, just appears to have "rebooted" the city map

Im playing a "multiplayer" with 6xown characters, dont know if that is causing probs currently

anyone else had this ?

Mabs

on a related note as it pertains to this quest arc.. when i went to do the "get the box from the docks" quest, as party went down the last set of steps to where the thieves are, there was a cutscene, im nto 100% sure, but it -looked like- a "welcome to trademeet" cutscene, caravan etc..