Hello,
The skeleton is not binded to any mesh but the cap, into maya.
When i move over the animation (frame 9 here) i obtain exactly the same with the exported GLTF.
So the maya file (the one i downloaded) has to be corrected to apply influence from bones to mesh ( i maybe have a corrupted file). Another point is that the file missing some texture ressources.
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What version of Maya did you used to open the file? I’m thinking the Maya 2022 is with a lot of bugs…
I tried to upload the textures but the file became heavy so I could not upload here
I unbided skin and binded skin again and started to work. I lost a long work on rig, but it worked.
Thank you for your attention on it.
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But I’m still confused… if there was no bone influence on the mesh, how did he do this pose on the babylon?
I use 2020, to avoid bugs…
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This strengthens my theory that this Maya 2022 is the problem.
The support of Maya2022 is quite new on our side, and it was a lot of change into the Autodesk SDK, so it may drive to strange behavior. I will have a look with 2022 .
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Thank you 
could you send me back the correct file with a functional skeleton ?
Saci2022 retopo.zip (748.6 KB)
Here, but there’s no animation, I made a quick one yesterday just to test it, and I was doing the Weight Paint yet
It happened again with a model of mine, when I pressed delete by type non deformer history. For a strange reason delete the proper rig for babylon and rig in maya still works…