the transaction will not be stored anywhere unless it is broadcast. and since you have been offline you did not broadcast it so it does not exist anywhere including in your wallet file.
here is your wallet location:
http://docs.electrum.org/en/latest/faq.html#where-is-my-wallet-file-locatedit stores your transactions. if you want to make sure, open it in a text editor but make sure not to change anything to make it invalid!
Ok fantastic thank you.
Then I understand that Electrum will create a transaction, broadcast the transaction,
but will not store data until it receives it from the network?
And if the transaction is not visible in the client, it will not exist in the stored wallet.file?