Adding special characters earlier in the game?

[Donkeyton]

Let's say I want to add someone like Mustadio into my party (using FFTPatcher and ENTD editing, not LionEditor) earlier than he normally appears. Can I just add him as a guest in one of the early story battles, then flag him to join at the end of the battle? Will he function normally in my party afterward? I assume he will, but clearly, I'll end up with a duplicate Mustadio once the normal one enters the party later on.

My question is: can I dismiss the normally occurring Mustadio when he later joins me, and if so, will my first Mustadio work as normal? Will he still set off the flags that I have Mustadio in my group, and thus, will I still encounter all the Mustadio-related events? Or will only the Mustadio who enters at the usual time work for those events?

Sorry if this is worded confusingly, but I hope you understand what I'm getting at. I want to add the specials earlier on, then dismiss any duplicates, but still retain the storyline and event benefits of having the specials.

[Smitson]

Can't be done. The game boots your dupe instead of the guest, leaving you with a useless unbootable guest.