Here is how I did it, using Windows 10 and Internet Explorer.
I cannot guarantee that this is safe, but it worked for me.
1. own some Bitcoin on papers with public and private keys before 2017-08-01
2. create and print new Bitcoin papers with public and private keys by downloading this software and going offline:
https://bitcoinpaperwallet.comFor precaution, delete the software when done, and restart computer to flush memory
2. create an account at:
www.kraken.com3. create an account at:
www.blockchain.info4. login to account at
www.blockchain.info and transfer your BTC from old papers to new papers by clicking on:
Setup -> Addresses -> Import address, and enter the old paper address.
Then click on Send BTC, choose the old address, enter the private key, enter the target address for the new Bitcoin paper and confirm.
I used the priority fees, and a transfer took about 15 minutes
5. The old papers now only contain BCH.
Download Electron Cash (Electron-Cash-2.9.2.exe)
www.electroncash.org8. Login to your account at kraken.com, click "Funding", choose "BCH", and click "Generate address"
6. Open Electron cash client and click on Tools -> Network.
Untick the checkbox "Select server automatically", right-click on electroncash.cascharia.com and click on "Use as server".
Click on Wallet -> Private keys -> Sweep, and enter the private keys from the old papers only containing BCH
7. As the private keys are imported, wallet balance should increase
9. Click on Send, enter your kraken.com BCH address and the amount to transfer.
I used the default fee.
10. Wait for 20 confirmations. You can check the progress by right clicking on the transactions and click "View on block explorer"
For me, it took about 8 hours.
11. I chose to sell the BCH for EUR on kraken.com (since I believe they will eventually loose most of their value)
Good luck!