Duplicate stream - error message

Hello,

I tried to duplicate stream from one project area to another project area on another server.

When I want to save duplication I get the following error message:

'Saving New Stream' has encountered a problem.

'IA Dokumente' has been deleted from the repository
'IA Dokumente' has been deleted from the repository
CRJAZ0215I Item not found: com.ibm.team.scm.common.internal.impl.ComponentHandleImpl@68d468d4 (stateId: , itemId: , origin: <unset>, immutable: <unset>)
'IA Dokumente' has been deleted from the repository
CRJAZ0215I Item not found: com.ibm.team.scm.common.internal.impl.ComponentHandleImpl@68d468d4 (stateId: , itemId: , origin: <unset>, immutable: <unset>)

Can somebody tell what's wrong ?