I would like draw everyone attention to this article,  it has some important information and examples of how change addresses work and it is the same for bitcoin, cinni and every other altcoin that exists. Everyone should read it so they can understand better how transactions work.

Important parts to read are "How Bitcoin Transactions Work" and "Preventing and Recovering from Change Address Disasters"

http://bitzuma.com/posts/five-ways-to-lose-money-with-bitcoin-change-addresses/