I have got into a problem with change address.
I made several transfers several months ago, the wallet was created by Electrum.
I can see the balance in a change address in last transaction in BTC blockchain explorer.
I re-installed Electrum and some other wallets and imported the original wallet, but I cannot see the correct balance of the wallet.
How can I transfer the BTC from the change address to somewhere?

Appreciate for any help.