I have a Bitcoin-QT wallet and the client is more than a year out of sycn. It would take years and massive amount of data to get it synced so, this is out of the question.
My plan was to move my coins to Electrum using swipe private keys.
Here is where it gets confusing.
If I run listaddressgroupings
I get few addresses, address "A1" has 0 balance, "A2" has my BTC.
If I use dumpwallet
I get a list of 100 addresses
If I run listreceivedbyaddress
I get one address, same as "A1" but it shows the same amount as "A2".
Question: What address should I use to get the private keys for swiping to Electrum?