# Description
Adds audit helper.
Removes computation of Total and Retained Revenue from cross models.
I've tested audit helper and the trick with the hashes, as discussed in the demo.
# Checklist
- [X] The edited models and dependants run properly with production data.
- [X] The edited models are sufficiently documented.
- [X] The edited models contain PK tests, and I've ran and passed them. **Except for today's outlier detector!**
- [X] I have checked for DRY opportunities with other models and docs.
- [X] I've picked the right materialization for the affected models.
# Other
- [ ] Check if a full-refresh is required after this PR is merged.
Related work items: #28946
