Quote from: Raiz on October 28, 2017, 11:13:16 PM

Quote from: TryNinja on October 28, 2017, 08:26:57 PM

and you know your private key

That's the part I'm worried about. Do I need to take a snapshot of the private key before I update to the new wallet?

That's not how this works. A private key is just like a static password for the address you own.

Here is an example of private-key (this one is empty, please NEVER share your private key with anyone): L1h6Had4ckdpA67nV5ogkPz6KFQq7MSi4AzRSWWSM2cYLsEc9b5d

Since you are using Electrum, you just need your Wallet Seed (the one given to you when you create your wallet). If you haven't made a backup of your seed yet, go to Wallet -> Seed and save it. When the time arrives, you will see instructions on how to redeem your BTG from your wallet seed.