Well, for those which did not yet figure it out, here is how to fix this:
Edit the "description.lua" file in folder "...DCS World ...\CoreMods\aircraft\M-2000C\Liveries\M-2000C\UAE Air Force" e.g. using Notepad++.
Replace all the wrong names with the correct ones, e.g.
replace line "{"FUSE_NUMBER1_001", 0 ,"M2KC_1T", false};"
with line "{"FUSE_NUMBER1_001", 0 ,"M2KC_1T_UAE", false};"
or also
replace line "{"TAIL_NUMBER1_100", 0 ,"M2KC_2T", false};"
with line "{"TAIL_NUMBER1_100", 0 ,"M2KC_2T_UAE", false};"
Save the lua file and restart DCS