Changing data from one UTM zone to another UTM zone?

Discussion created by malinoma on Apr 25, 2013
Latest reply on Apr 26, 2013 by rborchert
My situation is I am doing a project in western NY and we are under UTM 17N, but most of the data I have is in UTM 18 N because most of the state is in 18N, so the datasets I get from the state are in 18N. Now I went into ArcCatalog and changed the projection to 17N for the shapefiles, all of which is in NAD 1983. It made them the right scale, but they are about 200 miles apart, the 18N is on the west of the 17N now. How can I align these shapefiles? Should I give a higher or lower easting? if so, how is this done. or is there a tool for which this can be done?

Notes: I currently have vectors and Rasters in the map and will be transforming the vectors to raster later on when I have them overlaid correctly. I know how to georeference any raster dataset that may be incorrect. The problem right now is the vector layers. Both of the files say this below. 

Projected Coordinate System: NAD_1983_UTM_Zone_17N
Projection: Transverse_Mercator
false_easting: 500000.00000000
false_northing: 0.00000000
central_meridian: -81.00000000
scale_factor: 0.99960000
latitude_of_origin: 0.00000000
Linear Unit:  Meter