In the Skeleton file, it would be nice to preserve the gml:identifier element.
That's because not all AIXM files will comply with the recommendation to use as gml:Id of the feature the same UUID value as for the gml:identifier. Having the gml:identifier would facilitate searching with an XML editor in the skeleton file in order to understand the meaning of certain associations displayed in the Graph.
In the Skeleton file, it would be nice to preserve the gml:identifier element. That's because not all AIXM files will comply with the recommendation to use as gml:Id of the feature the same UUID value as for the gml:identifier. Having the gml:identifier would facilitate searching with an XML editor in the skeleton file in order to understand the meaning of certain associations displayed in the Graph.