Github user dkuppitz commented on the issue:
https://github.com/apache/tinkerpop/pull/595
Would be nice if the transformation would work with standard tools like
`xsltproc`.`
```
daniel@cube /projects/apache/tinkerpop (TINKERPOP-1608) TP2-to-TP3 GraphML
XSLT $ xsltproc ./gremlin-core/src/main/resources/tp2-to-tp3-graphml.xslt
./gremlin-test/src/main/resources/org/apache/tinkerpop/gremlin/structure/io/graphml/tinkerpop-classic-tp2.xml
runtime error: file
./gremlin-core/src/main/resources/tp2-to-tp3-graphml.xslt line 30 element copy
Cannot add an attribute node to a non-element node.
runtime error: file
./gremlin-core/src/main/resources/tp2-to-tp3-graphml.xslt line 30 element copy
Attribute nodes must be added before any child nodes to an element.
```
I tried to fix it by changing the order of some sections (more or less
randomly), but that didn't fix anything. If you know how to make that work,
great! If not, still
VOTE: +1
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