I'm trying to move my bitcoins from Bitcoin Core to Electrum in order to not have to store the blockchain. My starting position is a fully synced Bitcoin Core and a newly created standard Electrum wallet (without any imports).
I'm using the debug console in Bitcoin Core to execute
walletpassphrase to unlock my wallet, and
dumpprivkey together with the address obtained from
File > Receiving addresses...
Once Bitcoin Core spits out a private key I'm following the instructions here http://docs.electrum.org/en/latest/faq.html#can-i-sweep-private-keys-from-other-bitcoin-clients and pasting into the sweep input box and leaving the default address intact.
The exact error message I receive is:
No inputs found. (Note that inputs need to be confirmed)
Am I doing something stupid here? Is this even the best migration procedure?