Certain metadata concepts which originate from Snomed international are not being merged properly when Snomed is loading. The concepts should have multiple parents - one showing the proper location in the Solor metadata tree, and one showing the proper location in the snomed tree.
An example of this is
Metadata -> Role (SOLOR)
Which has two FQNs - one from Solor metadata - "Role (SOLOR)" and one from Snomed - Concept model attribute (attribute).
It is not appearing in the Taxonomy position is should be in the Snomed metadata, which is Model Component -> Linkage Concept -> Attribute -> Concept Model Attribute.
The class LoadTermstore has some merge logic which handles similar issues, and may be useful in looking at this bug.