guys, supposed that i have 1 bitcoin in wallet A before fork, and after fork i move 1 bitcoin out of wallet A. now wallet A is emply, so can I claim 1 bitcoin gold from wallet A?
You can't claim bitcoin gold at the moment as it hasn't launched yet but Once it goes live probably on November 1st, Yes you can claim your BTG's from wallet A by importing it to a designated bitcoin gold wallet. They are giving updates on their site as well as other necessary information here
https://bitcoingold.org/blog/