Use something to read the file that did that. (In the .wts file)
TRIGSTR_xxxx handles a string, so it returns automaticly a string, and should work. If you really want to recover their names, check the .wts file inside the map.
Ghan has said he has fixed this. Monovertex please confirm this fix. This was only a problem with people that had signatures in the upper levels like not the special members but the respected members.