When I record to a 16g flash chip on my Sony Z7U ( via the MRC1 recording box on the back) the time code I have pre set shows up on the clip during playback on the camera but the pre-set time code does not accompany the clip when imported into the Premier CS4. This is shooting in SD by the way. Am I missing a setting during import?
On your Z7, have you set the Date Rec option in the Others menu to ON? The default is OFF. That is how I do it on my Z5 which is very similar to the Z7.
EDIT: Ooops. Sorry. I see you are looking for time code, not time and date stamp.