I never ‘insert’ a consultant’s model to use as part of my model, I model all beams, columns, retaining walls etc I only reference in their model(s) for checking / review so granular control / display is not necessary.
Typically I find consultants models poorly modelled with elements not joined (because that’s the way they have always shown them in 2d), not dimensionally accurate, not coordinated (even between engineering disciplines within the same office) etc.
For export you should make sure that all of your elements in your Archicad model have the correct classification as it is these classifications that Revit will use to organise / filter your model.
Revit I find is particularly poor at cooperating with other software, model I have been working on in Archicad takes about 3min to export to IFC, takes about 3min to open in BIM Viewer, and takes about 5 hours to open in Revit!
Regards
Scott