Problem exporting sprite sheet to Unity, the frames are in the wrong order

I create 2D animation sprites for a 2D platform game in Unity. I animate the player movement frame by frame in Toon Boom Harmony 20, for example Player_walk and Player_jump. Then I export the sprite sheet to Unity via Easel JS. When I open the sprite sheet in Unity to separate all the frames in the Sprite Editor, the frames are in the wrong order. Is there any way to export my sprite sheet to Unity so that all the frames are in the correct order?