First grab Tenshi's adaptation of Luka's Animated Battlers script, put above main (on a different, unique folder above 999 main if your scripts are loose, and using a name like 001_NewAnimation) then replace
@bitmapFile = pbBitmap(file)
with
@bitmap=RPG::Cache.load_bitmap("", file)
Then, around line 73, 78, and 83 of the Species_Files script, replace the three instances of
with
AnimatedPokemonBitmap.new
do the same with lines 173, 178, (for shadow mons).
I have posted this under Tenshi's resource.