Solidworks sheet metal - lofted bend - bend lines

Hi,

I used bend line control in lofted bends feature. The problem is that I don't see bend lines in flat pattern feature (in bend-lines1 sketch). I think this was created afterwards and it won't regenerate sketch to show bend lines. How can I fix this?

What's weird is that I can surpress "Flatten-1" and the part will stay flattened.