XML crossrefs do not expand in SECORE

[Piero Campalani]

I am trying to update SECORE with new definitions, by using element cross-refs via xlink:ref attributes.
Curiously, while refs are resolved in the EPSG database (GmlDictionary.xml), they are not in the UserDictionary.xml.

For instance:

...
<gml:dictionaryEntry>
<CoordinateSystemAxis id="index-cs" uom="http://www.opengis.net/def/uom/OGC/1.0/GridSpacing">
    <description></description>
    <identifier codeSpace="http://www.ietf.org/rfc/rfc3986">urn:ogc:def:axis:OGC::indexed</identifier>
    <axisAbbrev>index</axisAbbrev>
    <axisDirection codeSpace="http://www.ietf.org/rfc/rfc3986">http://www.opengis.net/def/axisDirection/OGC/1.0/indexedAxisPositive</axisDirection>
</CoordinateSystemAxis>
</gml:dictionaryEntry>
<gml:dictionaryEntry>
...
<CoordinateSystemAxis xlink:href="http://localhost:8090/def/axis/OGC/0/indexed"/>
...
</gml:dictionaryEntry>

I cannot expand the refs, not even when setting the expand parameter to full, like:

​http://localhost:8090/def/crs/OGC/0/Index5D
​http://localhost:8090/def/crs/OGC/0/Index5D&expand=full