cnMaestro onPrem inventory export missing field

We are trying to export a list of all of our customers including which site they are connected to. If we go into inventory and select the field from the available columns list, it shows the site names correctly. Once we export this data however, the site field is empty in the .csv or the .pdf.

Currently running 3.0.2-r11, there’s nothing in the release notes for r15 or later mentioning this issue, so we haven’t tried upgrading. We’ve never needed this field in a report before so I don’ tknow if it has ever worked.