When I use ReSharper to add a using directive (using Alt+Enter) it removes "unnecessary" parts of the namespace. I prefer using the full namespace which is also the behavior of Visual Studio.
Example:
namespace MyCompany.MyTool.Data
{
    // This is what ReSharper gives me:
    using Core;
    // This is what I want:
    using MyCompany.MyTool.Core;
    // ...
}
Which setting do I have to change in ReSharper 4.5 so it uses the full namespace?