I was trying to convert a very simple Erdas Imagine AOI file (its a single polygon) into a shapefile and was mostly finding documentation on the inverse (SHP to AOI). I was trying to follow the steps listed here, but keep getting the following "There are No Selected Elements". Below is a workflow that worked for me in case it is helpful for anyone else.
[GIS] Convert ERDAS Imagine AOI to Shapefile
erdas-imagine
Best Answer
There might be an easier workflow, but this worked for me: