To open an assembly in Large Design Management mode, click Open (standard toolbar) or File > Open . In the dialog box, select the assembly you want to open, and then, in Mode, select Manage Large Designs. "
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PTC Creo Elements/Direct Interface for SolidWorks 3D CAD software improves the quality of converted design data with the industry's most powerful multi-CAD data exchange technology. When you convert data from PTC Creo Elements/Direct Modeling or PTC Creo Elements/Direct 3D Access, the quality of the native Parasolid SolidWorks format far exceeds that achieved with neutral 3D CAD data formats such as STEP or IGES. This interface supports bidirectional data exchange, which is a significant asset for companies that rely on multi-CAD design teams, both internal and external.
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Support for bidirectional data exchange at both part and assembly levels
Support for 3D geometry, topology, colors, part names, and attribute transfer
Ensure design integrity when using different accuracies and tolerances
What opening options did you choose when you opened your ensemble?
I would be you, I would open the parts without trying to read the tree and I would not try to retrieve the assembly constraints either so "Body BREP" mode for the parts and not check import the constraints.
For now, I just tried with the basic options (didn't have time to go into it), I'll continue on Monday.
Brep import, that's what I took, the function recognition being too random given the volume to be processed.
@Tomalam Thank you for the offer, I found a colleague who has it.
Your remarks confirm me in the conclusion I came to.
Since I'll be able to access Creo, I'll try: 1 - if possible, export from Creo in SW format. According to the GT22 link, I have a good chance. 2 - try to import subset by subset (which I could have identified, which is not the case today the 2k files are in bulk in a single directory, otherwise it wouldn't have been funny). 3 - finally export in STEP and import in SW.
Well, finally the export in SW format of Creo is a "pipe".
Unless I made a configuration that escaped me, Creo never offered me anything other than stp, neu and a 3rd one that I don't remember.
On the other hand, the import was done without problems in SW, which recognized that it was a big asm and therefore put all the components and S/E in the deleted state.