Retargting Root motion Scale Issue

Hello everyone,

I recently started to retarget animations between two different models with very different scales, almost 10 times bigger.

​​​​​​Everything is working well except for the root distance for a walking animation. The root need to move to get a proper root motion offset. As you can see on the pictures the distance is the same for both sizes, resulting in a small distance move for the giant mannequin.

Is it possible to convert values for root offset between two different sizes of characters? My only option now is to scale the source animations and export characters at the same scale.

Thank you by advance!