I have some exiting shape files that supposedly have a CRS of OSGEO:41001. If I import new data, and set the CRS to OSGEO:41001 they do not align. If I change the CRS of the new layers to EPSG:4326, everything appears to line up. While I can create pretty pictures, I can't do any distance or co-location calculations between layers. Apparently, I incorrectly transformed some data once in the past.
Starting for scratch, import old files (a base map of US) loads and displays. Screen coordinates for St George UT show as -12460233, 4682824. Load up new data consisting of Lat Long delimited text, the screen coordinates for St George show as -113.55, 37.02. Both layers have a CRS of EPSG:4326
Question: How can I fix my old files to be correct?
Question: What did I do wrong?