i think we are in the right area, but i suppose i need to learn how to do a full extract of everything, + all long codings and then compare.... must be visible (If we can do that?)
Can you confirm your long coding screens look like mine for starters? 
The long coding is extracted when doing an autoscan, it will be listed under the individual controller, whereas the channel mapping can be collected by using the Controller Channel Map tool in the Applications section of VCDS.
I compared the channels on the Central Electrics and nothing jumped out apart from the one previously mentioned. Might be worth checking the adaptation channels in the door controllers (42/52), apart from that, I'm struggling to see where else this can be done!
