I have a situation where I sent 1 coin to and address I own and my wallet sent the unspent output to a change address but due to a glitch in the wallet software, that change address doesn't show up in my wallet. I did see that change address in my wallet at some point in the past but when I upgraded the wallet, the address was gone. When I look at the unspent transaction, I see that it immediately flushed the entire address to another address that I think I do not own. I do not have my private key and cannot seem to reproduce it from my 24 word BIP32 mnemonic.
- If I own the private key to the change address, then how could the change address spend my coin without my private key?
- If the wallet doesn't identify the change address as being owned by me, does the miner take the balance?
I'm stumped by how and why this happened.