I have an SID raster and an mdb of shapefiles that at one point lined up in ArcMap but I cannot get them to line up anymore. They are both the same coordinate system - GCS NAD 1983. They won't even show up in the same frame together. I have to zoom to each to look at either of them. I have tried changing the coordinate systems and managed to get rid of the projected coordinate system on the shapefiles so that they are both just GCS NAD 1983 but to no avail. If anyone can help, I would appreciate it.