We have production databases that are in NAD83 UTM and a publication database that's in Web Mercator in order to match the ArcGIS base map standard projection for our web maps and applications. We need to update data in the Web Mercator database on a nightly, sometimes quarter hourly, basis and it would be great if we could set up replication so that it would project the data on-the-fly from our UTM database to our Web Mercator database.