Adding new scen rec to arrangement

[conny]

Hi -
Maybe I am tired but here's the problem:
I have an arrangement with some tracks ready.
Now I have two more midi tracks in session with some nice new sounds.
I want to add the result of these two in the arrangemant by launching that new scene.
Setting arm on the two new tracks, rec on on upper bar - every other track in the arr is erased when scene is launced.
How is this done?

// C