I am using the latest version now but the really annoying thing I find in it is there is no way to import keys directly, it only shows the sweep function and I don't know if there is a way to do it in console. I don't understand the reason behind removing that feature, it was so useful for when one needs to import paper wallets instantly.
You will have to create a new wallet and when creating choose restore wallet to import private keys. If you have already created a wallet with seed, you can't import an address. It is mainly to prevent users' loosing their funds due to lack of backup. I started creating two wallets. One with seed and another for importing addresses. I suggest you do the same or use other wallets like Bither and Multibit.
Creating 2 wallets sounds like the simplest solution. How do you go back and forth, change the wallet files from their default location?
https://electrum.orain.org/wiki/Frequently_Asked_Questions#Can_I_import_addresses_from_other_Bitcoin_clients.3F
You can change between wallets in Electrum menu. Open wallet other than 'default_wallet' to go to wallet with imported addresses assuming you already created wallet with seed.
That's pretty handy and I didn't know that.
Thx MZ
