I think that Cernunnos is talking about hte same issue that made me switch from using party1 to using focus...

I only triple box so when I join a BG I am sometimes not the leader (despite my stripped down clones zone load times) so my clones choose to follow the BG leader and target his targets etc... I had to do a quick edit of my macros to make it playable the first time it happened!

I did look at using a script to use a variable to hold the unitid of the main and another to hold the list of clones then whisper these to the clones on a leadership change but this breaks the focustargettarget mechanism and so scrapped the idea