I have recieved a Group of shape files with unknown coordinate System. The coordinates are like: 536605 , 5658923 and I can not find the corresponding projection/coordinate System. It looks like that the data has been from dxf to shp converted. I have tried to Change their coordinate to the one I need (ETRS_1989_UTM_Zone_N32) in Arc Catalog. When I add them to the mxd for the data with coordinate System, still they would have shift and do not place correctly. I tried to change it now in a new mxd to UTM32N and it comes a bit closed but still is in another ocation. what other Options I have to correct this data? I use ArcGIS 10.5 but the toolboxes of projection and Transformation are not available.