I have an feeling i get whatever Alex wrote.........., for once.
Personally :
I insert EZ2 as a soft synth, multiple outputs
I move/slide the midi data from the EZ1 folder to the EZ 2 folder and change its target to the EZ2 engine.
I delete the EZ1 folder
I select my EZ2 kit and if neçessary re-assign outputs, as and when i want to
I make music.
Where is the show stopping problem ?
Its a "hassle" sure, but a few clicks.....
Cheers,
Jerry