destination thread name from SMAT index file in 5.8

I have some code I’m updating from a previous version of Cloverleaf (5.3) which is designed to parse SMAT files to extract data about the messages.  One of the values I need is the name of hte destination thread.  In 5.3’s SMAT index files I was able to grab this from the “DESTCONN” entry.  On 5.8, “DESTCONN” simply shows a numeric value instead of the destination thread name.  Any ideas as to how I can retrieve the actual destination thread name for the messages?

Thanks!