Objects not aligned to axis

Does anyone know of the bulk rotate all the elements in a model to align to the scene axis? The model comes exported from Archicad, and I do not have access to the original Archicad file.

When exporting to Sketchup each element is rotated and not aligned to their yellow box.

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Never seen that. Probably the original Archicad model is rotated, or, possibly, the SketchUp exporter is using the info in a survey point to align each object to the “world” coordinates. It doesn’t seem to apply to basic building elements.
I would leave it as it is. Of course, exploding and regrouping would correct it. If I remember right, all elements in an Archicad export are unique.