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I am having trouble getting .shp layers to "line up" on QGIS.
Now, I opened them both in ArcGIS and noted there that they had the same projection. I opened them up in a text editor, and just to be sure, copied the data from one .prj file into the other. Reopened them in Arc and had no problems whatsoever.
However in QGIS I can't get them to come into the same map. I've tried every combination of CRS / Layer menu options that I can think of, nothing seems to work.
They seem to have the same Projected Coordinate System, but different Geographic Coordinate Systems: this I assume from going to the full extent, and note that both layers are on the map but hundreds of KM apart.
I tried setting them to the same GCS in QGIS properties, but then they both vanished. ("Zoom to Layer didn't work, they were gone.)
Is there are process I should be following here?
If the data were corrupted, wouldn't duplicating the .prj data be enough to fix the problem? If it's a GCS issue, how do I change that?
Mostly I'm looking for a process I can apply every time I import data to QGIS so I'm guaranteed to work around any CRS issues.