Does this ProjectZ tool auto populates the x, y, z coordinates using its original metadata source or it just re-project the coordinate system and recalculate the x,y, and z for the same data but based on their new coordinate system? Actually, I have numbers of GPS points stored in a geodatabase, they were collected using the Collector. However, they all have empty or <NULL> X, Y, Z fields while they are inside the geodatabase (I have no idea why?). I was asked to extract coordinates (x, y, z) using its metadata info, specially the Z, but no idea where do I get that metadata info!! I tried running ProjectZ tool, ran successfully but all fields came out blank as the original. Is this the issue of collector when collecting the data but not populating the metadata fields, or this happened while uploading the data to geodatabase or something else??? I would appreciate any suggestion. Thank you so much.