Regarding pooya87's screenshot above, (Tools > Load transaction > From text) I'm curious to see what this looks like, and how long it is.
On electrum's website (
https://electrum.readthedocs.io/en/latest/coldstorage.html), they don't mention the text option; they just say "
On your offline wallet, select Tools -> Load transaction -> From file in the menu and select the transaction file created in the previous step.
" which assumes nothing nasty is running on the 'cold' machine looking for an exit hole, which doesn't sound very pleasant.
Thanks!