PTC Tech support answered this one. Here is the solution in case you want to do this at some point.
In a Windchill shell run the command:
xconfmanager -s com.ptc.EnableEnumeratedName=true -t codebase\wt.properties –p
Restart Windchill
Tested and it works. Just hoping there is no downside to doing this. If there is no downside, why would this be an option and not just a standard property setting?