Hi,
Recently been having issues while working with this datum transformation. My company is working on a project where data comes from Trimble GPS receivers and also survey data. The survey data is both exported from Trimble Business center and also transformed with PostGIS using Proj4 into local state plane coordinates. The GPS data is post-processed with Trimble Pathfinder office and exported as shapefiles into the local state plane coordinate system. The shapefiles are then imported into our SDE which is in WGS84 using the WGS_1984_(ITRF00)_To_NAD_1983 Datum transformation.
When comparing data exported from PostGIS to the data in our SDE they line up fine in ArcMap, until I apply the WGS_1984_(ITRF00)_To_NAD_1983 Datum transformation to my map document (ArcMap 10.5). We see a 1m shift between the datasets when the datum transformation is applied.