I just missed the function to import a private key into Bitcoin-Qt. Okay, it's possible through RPC but with pain. :)
Why not adding a menu entry "import key" (or "import private-key")? There it should be possible to just copy'n'paste a private key string or even import a pk12 file.
This is a duplicate issue.
In any case: the reason this is not in, is that we don't want to encourage people breaching the wallet abstraction by importing/exporting individual private keys (It is easy to mess up and also doesn't combine well with heirarchical deterministic wallets)
See Sipa's import/export wallet pull request for something that should be supported in the ui.
What also would be accepted is a "sweep" feature that spends the coins in the given private key to the wallet without adding the key to the wallet.
Sorry. Didn't looked for duplicates. Close.
@jonasschnelli You can close issues you created for yourself :).