[GeoNetwork-users] How to batch import ISO19139 metadata in GN 2.4.0-RC2?

I can't find the option to load ISO19139 metadata on the batch XML upload page of GeoNetwork 2.4.0-RC2
What am I missing?
Ciao, WG

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Wolfgang Grunberg
Arizona Geological Survey
wgrunberg@anonymised.com
520-770-3500