Since then, when I open a STEP file in solidworks I can no longer modify it or even recover the parts of an assembly for example it blocks all the operations.
Is it me or the original file, I don't understand anymore?
It is likely that this only indicates that it is a WWTP part
I created a piece of sheet metal and converted them to WWTP and if I open it up it shows up with this green arrow. It is likely that this indicates that it is a volume element that cannot be transformed by SW since, unlike the imported part, there is no shape recognition.
We would have to transform everything with the features-works to have SW parts again.
I just follow the new features of each new version carefully. I've been testing this one for a long time now. It is practical for importing commercial parts on which we do not need to make any changes or movements.