some file are not detect on umodel but it detect on fmodel plz help

[xalteropsx]

i think blade and soul has achieve hidden method for u.model files plz take a look inside blade and soul file some file not even visible but it go visible if i used fmodel but fmodel doesnt provide extract if need further evidence feel free to reply

ue 4.25 and 4.25+

https://drive.google.com/file/d/1O3kccMBoRkGfQvyDLo-9uzOu60rE4SNC/view?usp=sharing

Pak_N_PA_3-WindowsNoEditor\BNSR\Content\Art\Character\Acc\01-얼굴장식\018068-2104중국전용대막고연얼굴장식\JinF\Mesh

hidden on umodel but visible on fmodel plz find the resolve

key-
0xD2E5F7F94E625EFE2726B5360C1039CE7CB9ABB760A94F37BB15A6DC08741656