The Code Conversion Utility disconnected an instance of a type definition because it found more than one type definition with the same qualified name and could not link the instance to the appropriate type definition.
Review the disconnected instances in the converted code and link them to the appropriate G Types. Alternatively, you can rename type definitions in the original source code and convert the code again. If multiple projects have type definitions with the same qualified name, convert those projects separately.
This message can also occur if references to a type definition get out of sync with the type definition. Mass compile the files in the version of LabVIEW you used to create the files to ensure references are correct.