I've managed to create a wallet with some old private keys from Armory.
After verifying that there are no funds on these addresses, I've closed Electrum
and deleted all files in C:\Users\MyName\AppData\Roaming\Electrum\wallets\
and the config file. The cache folder was empty.
After restarting Electrum and creating a NEW wallet the old addresses (and Keys) where still there.
- Where are these keys stored?
- How can I remove these old addresses?
In the answer to Removing old public keys @rdymac writes something about "second click options". I was not able to find informations about this option.
Clicking an address a second time or double clicking gives no result. Right-click doesn't give the option to delete the address.