DWG inches


I often get an external dwg file with misconfigured units. Some autocad users have the units set in inches and actually use them as if they are meters and it doesn’t bother them. When I attach such a dwg Microstation recalculates the units and more attachment does not fall in the right place nor is it the right size. How can I fix a dwg using a microstation so that its dimensions do not change when changing units? For now, we are making this change in ZW CAD, but we only have one ZW CAD license in the company, so it is a hassle for us.