You have two problems: adding a new piece of geometry to already rigged, vertex weighted and animated model is first one. Correct export of animation is second one. For the second one, Eric pointed you right. For the first one, attach new piece of geometry (pants) to already animated original model that is in it's 'Rest'…
Make sure both the shorts and the body have the same pivot and transforms. Then export each animation as a FBX file. Have you seen these pages yet? https://www.google.com/search?q=unity animation export maya
Hi everbody ! I build this character, rigged it , created a walk cycle and i want to attach a short to his body. The short should move accordingly to the movement of the leg and body. I' am new to rigging and looked around to find tutorials but some how i cant find tuorials that is giving me idea how to solve this problem.…