Porting legacy config files

[DavidSolid]

Hello,
I was trying to work with HM3D-trained PointNav checkpoints (https://github.com/facebookresearch/habitat-matterport3d-dataset/tree/main/pointnav_comparison#pre-trained-models).
However i cannot load directly the saved config since it is still uses yacs and not the new OmegaConf system. To retrieve models parameters to instantiate the correct Policy object that will allow to load the weights correctly, it will require a lot of manual work to find the parameter correspondence.
Is there any script or utility for such task?