New answers tagged metadata
Right now GeoNetwork is focused as a catalog, not as a storage service. So the answer is no. The idea is that the only files stored on the catalog are mostly cached thumbnails of the layers.
To do this you'll need to update the Description within the metadata. Unfortunately, there doesn't seem to be a real simple way to do this with arcpy. However, @Ashatz11 over on Stackoverflow documented a pretty straightforward workflow: Updating metadata for feature classes programatically using arcpy Also, here's a similar post on GIS SE, that's worth ...
Have you tried resetting the ArcCatalog settings? Delete or rename your "normal.gxt", this is in your user profile folders, for instance: C:\Users\myusername\AppData\Roaming\ESRI\Desktop10.2\ArcCatalog
Watch out that ArcCatalog has a default option that does update some of the metadata fields when you view the metadata sheet. Check out the ArcCatalog options > metadata tab > uncheck the tick box "Automatically update when metadata is viewed". More on automatic metadata update in ArcGIS in the online help.
Have you looked at the ESRI Metadata Toolkit? It is made for designing custom metadata styles. Heavy coding required, though.
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