Hide Members From Primary Location. If this flag is enabled, group member contexts are shown inside the group, but not shown under their parent context. This is a mapping feature that affects only the visual representation of the server context tree (e.g in System Tree). Components that show a real (non-mapped) context tree (e.g. Entity Selector) will show group member contexts at their real locations specified by context paths. No children will be visible under the group context in this case.
Members are not hidden from primary location:

Members are hidden from primary location:

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