Duping ? [Pservers]

Hey, i've been playing eternia for a while now, and i always been wondering if duping works on private servers like eternia, elite etc...

Well i know it works because the clients on private servers are still on A3, so duping has to work.
Well i got some problems to, i need a new working bypass for eternia or elite dekaron.
Anyone got any experience from this before, or maybe knows if this this works 100% ?

Please share your thougts =)!
Thx.

Please, do not ask how duping works or any shit like that, don't want this thread to get closed.

I had a working bypass for elite-dekaron, it doesn't work anymore though ^^ maybe I will work on it and release it, I don't play elite anymore though but if I do I'll let you know. Also, yes you can dupe in private servers, you just need a working bypass. :p