Let's take a look at the following:

1. List all objects with multiple parents keeping a list of those links that need to be added back (expected to very small)
2. Remove the undesired link (via Workbench or other means) creating a clean tree
3. Run a query to identify objects that have children
4. For each child add a statement in RELS-EXT child isAdministeredBy parent (can be done in batches)

Notes:

Links that are only used currently as a workaround for the lack of Project Space need to be added back.
ProjectSpace objects need not be administered by anything (or do they)?
Will the ProjectSpace object be created and its children added to its RELS-EXT before running this script?

Bobby's first cut:

1. Automatically adding isAdministeredBy when a concept has only one parent
2. Automatically adding isAdministeredBy when a resource has only one parent
3. Giving a way to look at the concepts that do not have isAdministeredBy links
4. Giving a way to look at the resources that do not have isAdministeredBy links
5. Giving a way to add isAdministeredBy to a concept ( with some integration into the way to look at those that do not have them )
6. # Giving a way to add isAdministeredBy to a resource( with some integration into the way to look at those that do not have them )