What do these properties do anymore? ie.ldap.xxxxx

Working with 12.0.2 and shifting the location of my ldap from a temp WindchillDS server to an OpenDJ server with just has users in Administrative and Enterprise branches. I noticed in the site.xconf these values:

If the configuration has been moved from the LDAP server to json files and this location is different from where my users are managed currently after the upgrade, what is this doing? It appears to be entries from initial base install before my upgrade rehearsal. The values are written to the ieStructureProperties.txt file in the WEB-INF folder. 

In previous versions, this is where Windchill read its configuration from the LDAP. Is this just a hold over that PTC will eventually clean up? Or does it still have some function?