Anonymous Individuals, RDF 1.1, and unnamed ontologies.

I'd like to canvass opinion on a few issues related to anonymous
individuals in OWL 2.

1: Can/Must anonymous individuals be distinguished from RDF blank nodes?

   1. An RDF blank node identifier is defined to be scoped locally to a *file
   or other RDF store* [1, §3.4]
   <http://www.w3.org/TR/rdf11-concepts/#section-blank-nodes>.
   2. An OWL 2 Anonymous Individual nodeID is defined to be scoped to an
   *ontology* [2,  § 5.6.2]
   <http://www.w3.org/TR/owl2-syntax/#Anonymous_Individuals>.
   3. The OWL 2 RDF mapping specification uses blank nodes to represent
   anonymous individuals. These are not freshly generated for each application
   of a translation rule. [3, §2.1]
   <http://www.w3.org/TR/owl2-mapping-to-rdf/#Translation_of_Axioms_without_Annotations>
   4. The mapping specification states that Import statements that are
   resolved to RDF graphs which do not contain an ontology header are treated
   as being included into the "importing" graph, via graph merging.  [2,
   §3.1.1]
   <http://www.w3.org/TR/owl2-mapping-to-rdf/#Resolving_Included_RDF_Graphs>
   .
   5. (1-3) seem to suggest that structurally equivalent nodeIDs in the
   documents in (4)  in should co-refer.
   6. If (5) holds, anonymous individuals in general cannot be represented
   as blank nodes.
   7. If anonymous individuals are represented as blank nodes, does
   multiply "importing" an ontology with no header  and which contains
   anonymous individuals result in a fresh set of individuals for each import.

2: Does importing a named  ontology via multiple IRIs generate fresh
anonymous individuals for each import?

3: Does importing an unnamed ontology via multiple IRIs generate fresh
anonymous individuals for each import?

4: Can anonymous individuals  in named ontologies be converted assigned
IRIs as described in [1, §3.5]
<http://www.w3.org/TR/rdf11-concepts/#section-skolemization>?

5: Do Anonymous Individuals with the same nodeId, in ontologies with the
same ontologyIRI but different versionIRIs co-refer diachronically?

6: Can blank nodes in unnamed ontologies be converted to IRIs as described
in [1, §3.5] <http://www.w3.org/TR/rdf11-concepts/#section-skolemization>?

Simon

[1] RDF 1.1 Concepts and Abstract Syntax.
http://www.w3.org/TR/rdf11-concepts

[2] OWL 2 Web Ontology Language Mapping to RDF Graphs (Second Edition).
http://www.w3.org/TR/owl2-syntax/

[3] OWL 2 Web Ontology Language Mapping to RDF Graphs (Second Edition).
http://www.w3.org/TR/owl2-mapping-to-rdf