if you know how the menu-file is named and where it is place (could not look for it, because I have not installed the Trimble-options) you could look for a file that has the same name like the menu, but the extension MNR.
To get the name of the menu you could look into the command _MENULOAD or with _CUI (and partial menues). They are normally placed in the directory (for Win7):
If you found the MNR-file:
If that does not help the second chance will be:
HTH, - alfred -
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