Good morning @mbeller,
About your second issue with missing camera lens in tiff. Here is your image and everything is ok there:
We have the info removed when the user enables “Remove exif data” option.
And there is one more case which should be fixed on NIK side - lens info gets unavailable if you export the image to NIK in tiff output format and then save it back.
So can it be your case?
Thank you
Regards,
Svetlana G.