I have a excel file with xy coordinates for points in the ITRF 2005 format. I am trying to convert the xy coordinates to the WGS 84 xy coordinates any ideas how i can go about this. I added the excel file to the map, added xy points and created a shape-file of the locations of xy in the ITRF 2005 Geographic coordinate system but having difficulty trying to convert it to WGS 84 and ideas as i have tried transformation and then projecting it to WGS84 UTM Zone 35S but the values don't match up.