Can I stop a transaction made on Electrum whilst not connected to the internet

[Notorious B.I.T.]

Hi

I sent some bitcoin using the Electrum wallet.  However the transaction never went through.  It kept saying "please wait" so I closed the window.  My wallet is not connecting to the network and I think the problem is because I am running an old version of Electrum (Version 1.9..  Assuming that is the problem, now I am worried that as soon as I update to the newest version of Electum, my transaction will go through.  Will this happen? and is there anyway to stop it before I upgrade? 

Thanks in advance

[HCP]

If you have your seed... then yes, it would be VERY easy to "stop" this transaction from being broadcast.

Simply find your current wallet file (http://docs.electrum.org/en/latest/faq.html#where-is-my-wallet-file-located), and rename it to "OLD_WALLET_DO_NOT_USE" or something equally obvious Or better yet, rename it and move it OUT of the Electrum wallet directory.

Then install the latest version of Electrum, and regenerate your wallet using your old seed (File -> New\Restore -> Standard Wallet -> I already have a seed). As the transaction was never broadcast, it can't exist in your new wallet