Isolated _Ionic_ Reference Energies for OMol25?

[kavanase]

Hi!
Thank you to the team for providing and curating such useful datasets and tools for the community.

I am currently training some NequIP models which we hope to submit to the OMol25 leaderboard soon.
I was curious about the isolated atom energies provided in https://github.com/facebookresearch/fairchem/blob/main/configs/uma/training_release/element_refs/iso_atom_elem_refs.yaml
I see that for some elements, the isolated energies for the ionic species (e.g. Li+) are given IIUC. Are these intended to be used in training somehow?

In the OMol25 dataset, the total charge and spin are provided, and I see the Mulliken etc ionic charge populations have also now been added which is nice. But there is no definite or clear assignment of ionic charge still. I have searched but I couldn't find any more details on this. Were these ionic isolated energies successfully used for training in any other cases, and if so how?

Thank you for your time and input!