Race X treats a weapon as martial instead of exotic. AUTO:WEAPONPROF| Doesn't treat the Change as valid and doesn't grant Proficiency.
[Dreamscarred Press]Expanded Psionics/Find the Mark Halfling Marksman missing Sling Staff Prof
CHANGEPROF was designed to handle single-type grants.
This dataset uses a multi-type grant:
This is beyond the capabilities of CHANGEPROF to detect at this time - changing to feature request