Imported embedded IFC object disappears

[Adel2]

I'm importing plates and screws from Simpson Strong Ties to a project. They are available as IFC-files. My workflow is that i open the IFC-file as a new model. Then embed the library info to the project and then I copy the created object to my main model.

But objects seems to disappear, fairly randomly. I imported a screw yesterday. It was imported as two separate parts (the head and the body) and everything was fine. Today only the head is visible and the body part is missing. This has happened multiple times for various objects now. So I guess something in my workflow is wrong. Anyone with an idea on what I can do to not make this happen?

Operating system used: Windows

[Laszlo Nagy · Accepted solution]

I think what happens here is that in the new model where you open the IFC files, Library Parts are created in the Embedded Library during the opening process, and these Library Parts are placed, and you see them.

However, when you copy-paste these Library Parts to your main model, you only copy-paste the elements (which reference the actual Library Parts). However, the library containing the Library Part definitions stay in the embedded library of the other file.

So, you should save all those GSM files from the other file to a folder, then either link their containing folder or load them into the Embedded Library of the main model.