Add new configuration in your assembly with a flat pattern then while adding the model to the drawing sheet change the configuration of the view from default to configuration that you have added for the flat pattern.
Solidworks sheet metal bend notes not showing.
Displaying solidworks bend lines the first method i tried was to go to view sketches.
Then ctrl select again and in leader select the straight leader with the x to remove the leaders.
To toggle the visibility of the sheet metal bend notes.
Prior to breaking your view ctrl select your bend notes then in leader select the straight leader without the x then drag the arrowheads over to the ends of their corresponding lines.
Have you tried to right click on the flat drawing select properties and then in the view properties tab there will be a box in bottom right saying display sheet metal bend notes.
That opened the sheet metal prpoerties box.
In view properties the check box was checked to show bend notes.
Here is an idea ilkka.
Click more properties.
That refreshed the sheet metal parameters and the bend notes reappeared on the drawing.
Click the green check mark to ok and close.
This toggles the visibility of sketches and if it is off the bend lines sketch will be hidden the second method i used was to expand out the flat pattern in the feature tree and find the sketch bend lines2 could be other numbers shown.
I went to the model and right clicked in the feature tree on sheet metal and clicked edit feature.