Yes, it's a solution, I can create "fake" cords using extrusion.
But given the number of assemblies I have to export, the number of cords to be redone using extrusion (let's say that there is a lot of them) per assembly, I might as well be honest, it's going to be very very long! During this time, the toolmaker will be on standby and will be behind schedule, and the deadlines will not be met in the end.
In view of your answers, what I'm asking seems infeasible, and I find it a shame to include in soliworks the solder seams function, and not to be able to use it afterwards to work on it under another software because it is not taken into account in the file export.
if you have Solidworks 2010 or 2011 you can generate your welds via a function and there you create a weld part. Which was great for neutral file transfer because the solder was a part but they abandoned that from 2012... I liked this position... See the links:
I also have 2016, but you have evolved with all the versions??? If so, you can tinker. If you have an old version of Solidworks 2010 in your archives, you can install it on your workstation or another and create the welds on your part by first generating a WWTP with 2016...