I may be missing this but my character design would be starting with a rating 3 Fake Sin and 5 rating 3 Fake Licences. Now if I want to buy a new one that's easy enough make contact, pay money, wait, get new fake sin. What I'm wondering is are there any rules about ugprading existing ones. Lets say I like my fake idenity and just want to make it more "real" so I want to change it from a rating 3 fake SIN to a rating 6 one and add 2 new licenses to represent a new combat spell and a car license. How would you handle it pay the differnence, pay again for upgrade, pay again for new or something else?
Pay the difference = There's already data out there its just being upgraded and made more solid in which case you just pay the difference between what you have and what you want e.g. 3 - 6 = 7,500 nuyen (15,000 - 7,500).
Pay for upgrade = The data's already there but because its being expanded and inserted into new databases the risks are the same so while the SIN remains the same but becomes more solid (same id but better dna/picture etc) you have to pay the full price for your new id. You still only have 1 SIN saying your Tom Harris of Bloomington Illonois but its now a rating 6 identity not a rating 3 one.
Pay for new = They're creating a whole new identity for new so you have to pay full price for your new SIN as above however the difference is the ID number. So what you have here is two SINs for Tom Harris of Bloominton Illonois one a rating 3 one of XXX-223 and one a rating six one of XXX-441. Same personal tastes, address etc (for running a "legitimate business) but different ID and different back up data.
Something else = I missed a rule again or you have a different/better way to handle it.
Right now I'm leaning towards option 2 the risks are associated with creating the back up data so you have to pay full price but they can take your existing fake number and alter the data it links to and edit it so you go from being Tom Harris of Bloomington Illonois with no background info and the DNA of a chicken to Tom Harris of Bloominton Illonois who was a solid if not outstanding student at the local magical accademy and has matching DNA (or close to what your after).
EDIT
Example
Start game with R3 fake SIN with 5 licenses (magic, gun bike, 2 combat spells)
After a few paydays pay for a second fake SIN R2 with 2 licenses R2 (magic, gun) as an the job can be burnt fake ID.
After a few more paydays pay for a third fake SIN R6 with 2 licenses R6 (Magic, gun) as secure fall back identity to go with bolt hole.
After even more paydays pay for a fourth/upgrade on first? fake SIN R6 with 7 fake R6 licenses (magic, gun, bike, car, 3 combat spells) however this has the same name, address etc as the intiial one its just now more solid for day to day living as a "magical consultant".