Thank you. By removing the transaction, do you mean delete the Pending in the Outgoing Payments tab under Send? I fear this will cause a loss of funds.
it sounds like you've created a "payment request" not a transaction. it is created from your "receive" tab and it is seen there which is why there is nothing in your "History" tab. that is the only case i can think of that says "pending" and doesn't ask for "fee" since you aren't making a transaction.
when you right click it do you see an option saying "Save as BIP70 file"?