How to rename the sales channel for new order? and can i edit the sales channel of existing orders ?

We recently upgraded our integration with Farfetch. And we noticed that after the integration, all new orders from their platform can't show the sales channel as Farfetch. How to fix this? 

Is there any way to default the second option choice? Coz it looks like too duplicated to mention the color twice when there's no color option to choose.