I see…sorry bad news then for this moment 
But maybe @Graham.O could help you out here with a manual database mod as workaround ? Not a supported method, but might be worth a try.
Engine Prime stores all relevant meta tag data on the same drive that the song exists on, so a collection on a removable drive will have all it’s meta tag data as well as crates travel with it to any computer plugged in. This might also be a workflow to consider to move on from here.