No joy. I look at metadata either through windows/properties in Organizer or right click on the thumbnail. I get everything else with complete selected but not ISO setting, for some reason. Recently used a Nikon D700 and that records ISO perfectly well, so guess its an anomily between D70s and E7.
This screen shot is from PSE7. I didn't check with other versions. Maybe there is something going on with the files themselves, or your catalog. You can try importing one of these files into a new catalog and see if this corrects the behavior. If that doesn't work, send us one of the files so we can test it on our side.