Hi @tomas_wiklund. Does that column represent a custom iProperty that is driven by a Parameter? If so, then you could change the 'CustomPropertyFormat' settings for those exposed parameters, either within the parameters dialog box while each of those models are open, or by running some custom iLogic rule on each of them to change those settings for you.
When doing it manually, when you have the Parameters dialog box open, and you have checked the check box in the 'Export Parameter' column, that automatically creates a custom iProperty with the same name and value as that parameter. Then, right-click on the row for that parameter, and choose the 'Custom Property Format...' option from the right-click menu.

That will open a small dialog which will allow you to change how the custom iProperty's value will be formatted.

And if doing it by code, once you find that Parameter type API object, it will have a property named ExposedAsProperty which is the same as that check box in the dialog, allowing you to set True as its value to check that box. Then the parameter has another property named CustomPropertyFormat, which will return a CustomPropertyFormat type object, which you can change the properties of, to achieve most of the same settings as you see in the dialog...except for the last check box for 'Apply to existing comparable parameters'. In those settings, if you set the Property Type to Number, the units string will not be available, because it will be a purely numerical value. If you set the Property Type to Text, it will allow you to uncheck the Units String, to not include them in the value. Then the information in the BOM will be uniform, and not include those pesky units strings.
Wesley Crihfield

(Not an Autodesk Employee)