Exporting a posed armature

Hi.
I imported a skeleton from Unreal (Metahuman). This skeleton has a body mesh with weights. I want to pose it and exported it back to Unreal. I assume I have to pose in Pose Mode, but how to freeze this pose to export it? Is it possible? If I export as I mentioned, in Unreal the skeleton loses the pose, of course… I can´t export it animated because, in Unreal, the animation is a different asset.
Thanks in advance.

Hi, in pose mode apply pose as rest pose.

@digitvisions thank you for replying. I made what you told me. The armature keeps its new pose, but I don´t know why, the mesh backs to its original pose…

Create the pose you like in the Pose Mode. Go to Object Mode. The character should maintain the pose you created. Select the armature (“skeleton”) ONLY (check in the collections panel to make sure this is the only thing selected. Press Delete. You should be left with your “frozen” mesh only. Copy it and paste in any other Blender file.