ASP.NET Web Reference Missing from DLL

[codec123]

I am working with a .NET 3.5 class library that was created in Visual Studio 2008, and later updated and recompiled in Visual Studio 2010. The strangest thing is happening: One of the Web References that is listed in the Solution Explorer does not actually compile into the DLL (proven by inspecting the DLL with .NET Reflector), and there are no errors or warnings respectively. I tried Googling and searching this site and I could not find any applicable information. Any advice about why this is occurring will be greatly appreciated! Hopefully the information provided is enough; otherwise I should be able to provide more.Edit: The namespace for the Web Reference shows up in the Solution Explorer, but not in the Object Browser. Some of my colleagues are saying that this is an issue with the Web service itself. I should mention that it is an SAP Web service and during development we are interfacing with a test environment that was recently upgraded and could be acting problematically. I will confirm whether this is the cause once I am more certain, so please don't hesitate to share any relevant information meanwhile.