Did you record your piece with the configuration unfolded before making the composition? Sometimes we make a plan with an unfolded device but we forget to save the piece so we don't save its unfolded state .
Thank you for your answers and sorry for the delay in responding.
Regarding the part, it does contain the MSflat pattern config. When I click on this config, the part appears in the unfolded state.
Where I have a problem is in the drawing. Even if I update the front view palette, SWorks understands that I have a sheet metal part and offers me the unfolded state but in this view I unfortunately have the same thing as the front view!!
If I place it qd even on the map and I click on it to see what it is, it tells me that it is indeed the view of the Default-MS-flat pattern config with the unfolded state checkbox in orientation...