In CloudHealth, costs associated with specific Cloud Accounts are appearing in the "Assets Not Allocated" (or a user-defined catch-all group) instead of the intended Perspective Group, even when a static or dynamic rule is configured to map those accounts.
Perspective dynamic filter was using URL Encoding (%20 (space), %28 (open parentheses) and %29 (closed parentheses) in an attempt to catch the Amazon Account Name, which had spaces and parentheses in it.
CloudHealth admin updated the perspective to use the actual AWS Account # to resolve the issue.