Debugger Source Path mapping should be part of kit & project

You can map in (Qt) source paths using the Options->Debugger->General->Source Paths Mapping. However, this is not a logical place for this setting. 

Which Qt version sources should be mapped in depends on the kit you use to build your project. And if you map in other sources, those would depend on the libraries you use in your specific project. 

When I now switch kits (or projects that use different kits), I need to re-setup the mappings in order to be able to debug into Qt. That is annoying and confusing. IMO the source path mapping belongs with the Qt version or kit setup, and the other mappings belong with the project settings.