Bugs animations Rotation Blender in BabylonJS

Hi everyone,

I have a new problem.

My scene is finished and I need to animate several meshes.

When I use "Location" animation, always is good but if I use a "Rotation" animation, all objects animated become wrong. Here an example with screen shots :

Cas 1. Start animation rotation of plan mesh (in background of the scene, selected in Blender in orange) :

Cas 2. first rotation like we open a door :

Cas 3. back to origin position :

cas 4 : after export, many problems and same render like here in babylonJS :

You can see all meshes animated are offset or anything else ... What I'm doing wrong please ?

Thanks !