Bug: NIM072608 - Copy/paste of a geometric network in a Version 10 ArcSDE geodatabase fails with an "Item not found" error
Copying and pasting a feature dataset from an ArcSDE geodatabase that contains a geometric network may result in the following error:
"Item not found."
This specific error can be related to cases where 9.3 ArcSDE geodatabases containing a versioned geometric network are upgraded to 10.0. Issues with exporting the feature dataset containing the geometric network are experienced due to metadata being created in the documentation column of the GDB_Items table during the geodatabase upgrade process.
Contact Esri Support Services to begin troubleshooting this issue.
Esri Support Services website
This issue is resolved in ArcSDE 10.0 SP4 and the 10.1 release.