You can bring any assets from any model pack into reloaded. Mostly what you need to do is make the _d2 to _d texture, create the _n and _s texture files using a paint program if they do not exist.
Put all the .dds files and the x file and the fpe file and .bmp file for the entity into a folder in the entitybank folder in reloaded. ( 6 files per entity)
Copy one of the reloaded FPE files into that folder. Change the name of the old FPE file till you get the info transferred to the new Reloaded FPE file.
Test in reloaded to see if it works.
Also in the docs directory of reloaded there is a document that explains this also.
Good luck and happy converting.
Not being critical but would be better asking this in the reloaded forum.
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