Answer
- The data is stored in the intersection even when the parent is removed.
- To clear the data, you would need to put the children back under the parent, run a DM job to clear data that is for E#[YourTopParent].DescendantsInclusive and T#[YourApplicableYear].DescendantsInclusive and then force consolidate.
- This will clear the elimination data for the parent (but also the data for the children entities).
- Then, the parents can be deleted/removed as needed.
- Note: There is a pending update to the product to address this in a future release.
Source: Office Hours 2020-08-27 Partner Enablement