Everyone who is looking for recording 4 or more miditracks at the same time;
Do you have 4 midi controllers devices and want to record in 1 live performance?
Set preferences to control surfaces, set them up using edit button.
No master keyboard and separate them.
Lock surfaces (option or right click on the track of device you want to play).
An your up and running.
Make sure that your driver software is correct for every physical midi device.
Do you have 1 midi controller like I do, and want to record i.e. 4 pad banks and 1 keyboard?
Or do you have windows?
Than you should read this post from my new found friend Koshdukai, the first answer
on my question in the link above!