Some animations not working ingame

[D4RK_G4ND4LF]

works fine in magos' but these animations don't work properly ingame:
-birth
-attack
-spell
-spell channel
they look like the stand animation instead

 

[NexusBlizzard]

I had the same problem with one of my models but I finally managed to find the issue. If you convert it to MDL you'll see a list of animations at the beginning. The sequence intervals should be in order, otherwise the model won't function properly. The animations you've mentioned are misplaced, for example Birth (0-60000) should be the first animation in the list, and not between Spell (71000-73000) and Death (107000-109000).
tl;dr version: Just rearrange the list at the beginning of the MDL, reconvert it to MDX and it should work

Let me know if it worked or if you have any questions.