Yes, the new account on the new device gets moved to the old device as the old account moves to the new device.
I gave you a link to where to posts questions. Hell you could have asked this on your other thread. Link again anyways - http://bit.ly/XYLzt7
No, not anymore it doesn't. It remains linked to the old phone. So you will have access to the acc on both devices.
No. it now stays on your old phone as well. but if you reset your old phone back to factory setting. then download it again. this will take your old kaw account off and let you put another one on
To get it off the old one email support and send them, game name, your in game name and device id either your imei or whatever the apple one is and ask them to remove it from the device.
I think this may be different for idevice and android, pretty sure with idevice it is no longer available from the old device.
I think your wrong jez. They have introduced ATA ID on devices now to help curb acc sales etc.. You will be hard pressed to get an acc detached from your udid now.