Hi everyone,
I'm newbie in this theme. I wonder about my anonymity.
I want to figure out about reuse transaction.
Assume following case.
In my wallet I have two unused addresses (A and B).
Someone has sent 10 coins to my A address. Now I have:
A: 10 BTC
B: 0 BTC
And I want to send 10 coins to someone's X address.
I want to coins will be sent from B-address without sending to myself.

Then I'm going to create new C and D addresses. And do the same.

Is it possible to do this in such lightweight wallets as Multibit and Electrum?
If Not then is it possible to do offline transaction from A to B without registry any information in blockchain?