webService-WSDL tab Data getting disappeared.

web-service consists of numerous operations and when you go into the WSDL section all the data in there is getting disappeared.

The problem occurs- Cannot find document type  needed to .generate WSDL.(This occurs when package dependency is not resolved)

webMethods Diagnostics Data.

http://localhost:5555/invoke/wm.server.admin/getDiagnosticData