[cflsystems]

QT mentioned that it will be "complicated programing task" because of the way address book is coded in the first place. Yes it will be. But if this was coded properly to begin with it wouldn't be such a pain. Right now there are these main fields that are hard coded and as you can see from the code I posted in way too many places. If all this was started in a table and not hardcoded in init.php would have been way easier. I think QT just copied the customer details from earlier versions and turn it into address book in 4.4.x but this created the whole mess...

Following the above logic you can add as many new fields as you want as long as they are named differently.

If in near future QT decides to scrap the address book the way it is right now and re-code it from scratch then all this will not matter. Unfortunatelly I don't see this happening - it was requested since 4.4.x was introduces and still no change so ...