Root motion not working in montage


I have imported Greystone from paragon to UE5. Everything works with one exception and that is root motion in animations.
Even when I add root motion to in-place animation manually (for example Attack_RMB) it is visible in the animation itself. When I create a montage from that animation it stops working. Root motion is not visible in the montage preview and it is not applied to the character when montage is used in-game either.
Is there some way how to fix this or am I doing something wrong? (To add root motion to the animation I create key-frame in the animation start, go to end frame, move the root node and create second key-frame. In animation preview it looks and works fine).

Thank you, Gibbon