I have searched for that a lot but still haven't found an exaustive answer, so any suggestion is very welcome. Let's imagine the following scenario: ISP1: master ispconfig server with web interface WEB1: general web/db/etc. server with ispconfig installed as slave of ISP1 WEB2: general web/db/etc. server with ispconfig installed as slave of ISP1 ISP2: brand new ispconfig server with web interface What i am trying to do is to pass WEB1 and WEB2 under ISP2 as their master, kind of "detach" them from ISP1 and "attach" them to ISP2. No data from WEBX servers has or needs to be moved, just want them to be controlled by ISP2 instead of ISP1. Any thought? Thank you all for this great piece of software.