Quote from: xryan on November 24, 2017, 09:28:07 AM

I want to (Transfer) sweep BTC from Electrum Wallet A to Electrum Wallet B

a) I export the private keys in wallet A

- I tried CSV, JSON, copy and paste

b) I use "sweep" in wallet B (I have used all three ways from a)

However, the sweep button stays grayed out, i.e. is not functional.

What am I missing?

In general that sweep button stay gray in case if private key is not valid or it is encrypted so Electrum just does not recognize private key.There also can be problem with sweep if you have some unconfirmed transactions connected with that private keys.Since you want to transfer BTC to new wallet if sweep option is not work just send them from wallet A to wallet B like Abdussamad advised you.