[BM SS4] Registered SQL*Server Feature has no Text Sub-Feature

I've got a table in SQL*Server intended to store polygon information. When I "register features", I set the feature to be a polygon-collection, and in the GSA I see the resultant "MyPolygon_Collection" and the sub-feature "MyPolygon". I can't figure out how to get a second sub-feature of the collection for "MyPolygon_CollectionText". When I right-click and "insert polygon placement metadata", there is no bottom section for the annotation modes....And the sub-feature only show "Schema Versioning" for the right-click operations. Is annotation not possible for "collections"?