Exif, Known Issue for C1 and MediaPro?

When I import an JPG file into C1 6.x, the Lens Model information is not displayed in the C1 metadata tab, but when i did the import in Aperture, the Lens Model does show up.

I tried to manually add the Lens Model using ExifExchanger, did a refresh in C1 and it finally shows up; however; when adding the file to MediaPro, the Lens tab (in list view mode) gives a blank.

Is this a known issue for C1 and MP?

Here's my setup:
OS 10.8 + C1 6.4.3 + MP 1.3.2