[HOW TO] CCBill to NATS migration
 

It has been written a year ago, but it never got public. Written by a guy who did multiple CCBill to NATS migrations.
You can check it out by direct link only, at: CCBill to NATS Migration

It requires some graphs, but didn't have any time for that so far. Please let me know what you think of it. Oh, btw, you needed to click on the Table of Contents to see more information.