Help - transfering bitcoin old bitcoin core 0.12.0 wallet I have a old bitcoin core wallet 0.12.0 ... I tried to transfer bitcoin from this to a new Coinbase wallet 2 days ago... Nothing has shown up in Coinbase wallet and the status of the transation in bitcoincore shows sent - but with a ! and status 0/unconfirmed.... is this transaction ever going to work or is there a way to cancel? I dont seem to be able to do anything with it now... so am concerned about how I can I get bitcoin from this old wallet?

It also has years worth of syncing to do to catch up
Export your private key(s) from 0.12.0 and import into a more recent version of the wallet, send from the newer version.