Doing this too often lags the server, after continual reproduction by a five man group over 30 minutes server performance had noticeably degraded.
Additionally:dupes can be killed, force fed, blood bag and blood bag taken from, restrained and basically everything a living character can have done to.
I hope this helps and the issue is easy to fix.
After some time I have found this bug has also severely reduced many friends desire to play due to an over reliance on this bug. They simply dupe in a random house, run around killing everything they see then when killed return to the dupe spot. Removal of this bug would discourage shooting on sight, and keep people interested in the game. If anyone is interested in using this bug please don't, you will end up very bored very quickly!