When I create plc enum structure (or any structure) and its instance for example:

TYPE myEnum :
    (
        Unknown,
        Available,
        UnAvailable	
    );
    END_TYPE

myEnum_instance : myEnum;

Compiler will generate myEnum.cs file. That is perfectly okay.

But when I completely remove my myEnum.st structure from PLC program, C# compiled file myEnum.cs is still present and is causing errors.

It would be nice, if compiler removes unnecessary structures automatically.