Thanks @elaine_rosenber , for what it's worth, that same dump file which was generated from AuraDB has been successfully imported into other AuraDB instances.
The issue to convey to Neo4j Desktop people as well is this...
A dump file generated on AuraDB will not load (yields no nodes/relationships) into Windows Neo4j Desktop using the expected terminal commands (and the same is true in trying to use the UI Import Dump File features of Neo4j Desktop).
Thank you for your help.