From Stellar back to Look

Hello everyone. I am trying to find an effective to convert my Stellar materials back to Look. A lot of discrepancies occur during the process of conversion (especially when it relates to material's basic color, texture maps that change their extensions, etc). There's a wide variety of things that happen in the conversion process that makes it difficult to return the material into a similar state to when it was in Stellar. It's been particularly hard to also obtain a list of the materials in the scene so I can create assignment tables to automate the switch for future scenes that use a similar material library. I hope my question makes sense. Thank you!