How can I get the bend info from surface flatten?

I created a sheetmetal multibodied part.
The short edge has a rounded cone like corner which was created using swept flange.
When I try to flatten the short edge, the cone like corner doesn't flatten.
so I use flatten surfaces to get the flattened profile.
Then thicken the surface to get my flattened part in drawing
I) how can I show the bend lines of the corner cone when I bring the part into drawings?

File attached.

2 Answers

Here is the full process. Hope this illustration helps you.

This could be one way of doing it.