Hi Jason!
We have "solved" this problem by finding the lookup / dialog and then creating a copy of it...if it's a lookup, we'd take a duplicate and name it something like LOCATION_WO and then save that into LOOKUPS.XML with a DEFAULTVALUE control and / or a WHERECLAUSE at the table level, and then update the application XML (in your case, WOTRACK) to reference that new LOCATION_WO lookup.
If it's a dialog box, we typically find the XML in LIBRARY.XML and then duplicate it into the application XML (WOTRACK) and make updates there, as well...