creo4 config.pro option documentation for: STORE_TOOL_PATH_FILE 
store_tool_path_file
yes
*
, no
Specifies how CMM probe path information is computed:
yes
- The probe path information is stored in a file called filename.tph
, where filename
is the name of the CMM model.
no
- The probe path is recomputed every time you retrieve the CMM model or change any measure parameters.