comp-5 redefination

Release: Net Express 5.1 .NET & Visual Studio 2012

While compiling the source from NE5.1 in Visual COBOL 2.2.1, we are receiving a warning for comp-5 redefinition.

The vaiables are defined as follows: 

               01  WS-MENU-ID      PIC S9(4) COMP-5.

               01  WS-FIELD-KEY REDEFINES WS-MENU-ID

                                       PIC S9(4) COMP-5.

               01  WS-BUTTON-ID REDEFINES WS-MENU-ID

                                       PIC S9(4) COMP-5.

This returns a warning about using this COMP-5 redefintion. Is there any way to remove these warnings? I do not want to suppress them. What are the implications it will have in code.