In new Electrum versions Save button is used to store the transaction locally (in wallet file) but before it was doing the Export button. The docs still tell users to click "Save" which is creating confusion, it needs to be changed to Export:
https://github.com/spesmilo/electrum-docs/blob/master/coldstorage.rst#create-an-unsigned-transaction
In new Electrum versions Save button is used to store the transaction locally (in wallet file) but before it was doing the Export button. The docs still tell users to click "Save" which is creating confusion, it needs to be changed to Export:
https://github.com/spesmilo/electrum-docs/blob/master/coldstorage.rst#create-an-unsigned-transaction