Save assembly as eDrawing with all configurations

Add below line before doing the saveas

swApp.SetUserPreferenceIntegerValue swEdrawingsSaveAsSelectionOption, swEdrawingSaveAll

Here is one quick example that would works for parts, assemblies and drawings.

Dim swApp As SldWorks.SldWorks
Dim swModel As ModelDoc2
Dim nErrors As Long
Dim nWarnings As Long
    
Sub main()

    Set swApp = Application.SldWorks
    Set swModel = swApp.ActiveDoc
    swApp.SetUserPreferenceIntegerValue swEdrawingsSaveAsSelectionOption, swEdrawingSaveAll

    swModel.Extension.SaveAs OutPutFileNameHere, swSaveAsCurrentVersion, swSaveAsOptions_Silent, Nothing, nErrors, nWarnings

End Sub
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