Well I tried it and it's much better, all my sheet metal is unfolded perfectly,
Now I still have 2 little ones
worries.
I don't have any more DWG generated at the end of the operation, but I keep the drawing open so it's not too bad I can save it myself.
And my sheet metal work is not all well oriented.
Some are on the edge, others are slightly inclined, which is problematic for using laser cutting.
If you remove the flat-pattern configuration of the inclined part or on the edge and restart sheetmetal you still have the same defect?
It also happens when you completely modify a sheet metal the flat-pattern becomes totally wrong and the only way is to delete this config and redo it (here via sheetmetal)
Hello
Indeed, there is indeed a problem of orientation in some cases.
I have opened a request so that we can analyze this problem:
R&Dmy - Anomaly #161284
The view in the unfolded state is tilted
Regarding the DWG generation problem, I don't reproduce it.
Can you tell me your methodology?
Sincerely,
Hello
Thank you for noting my problem 
Then for the export, it worked without problems before the update.
Since no more DWG running the tool, I have to keep the drawing open to save it myself.
Attached are the parameters of SMM.
Thank you!
Hello
Is the problem only present on a file?
Because I don't reproduce the problem, when I generate a DWG it creates it for me:
with the same options:
Kind regards
Hello
No, I have this situation on any file.
I did some tests, and by unchecking (Force 3D activation) it generates a DWG and if it is checked, it no longer generates any for me. I repeated the operation several times with the same result each time.
