David,
With ‘Add Precision’ on you should see the GMT offset as well as Date/Time. Do you (and is the field definition of the outbound variant long enough to contain the full DT length)?
If you do then Add Precision is doing its job.
With ‘Add Precision’ off the GMT offset is normally eliminated.
Jim Kosloskey
email: jim.kosloskey@jim-kosloskey.com 30+ years Cloverleaf, 60 years IT – old fart.