The IDL Extractor for COBOL can be started from an existing pair of IDL and server mapping files. A server mapping file is a Designer file with extension .cvm. See Server Mapping Files for COBOL.
To start the IDL Extractor for COBOL
Open the context menu of an IDL file and choose .

Continue with Step 2: Select a COBOL Extractor Environment or Create a New One as described under Scenario I: Create New IDL and Server Mapping Files.