Hello everybody,
We have a problem with Blender Exporter 4.6.1.
Let us explain to you :
We have two animations : one cube with skeleton and another with a standard animation.
In blender, after we export our scene with babylon exporter, it replaces all the animations by one.
In the babylon file, we have all animations that are merged one after another. For all meshes that contain animation, the exporter copy all the keys of all the animations in one animation.
Please find enclosed the file with source and video to show you this bug.
Thank you in advance for your help 
Letsbro studio team.