It was indeed being overridden by the global NuGet.config file (C:\Users\UserName\AppData\Roaming\NuGet\NuGet.config).  Restarting Visual Studio seemed to clear it.

Automatic Package Restore: Unable to find version of package
I plan on travelling from Bolivia into Western Brazil (Caceres or Cuiaba in Mato Grosso) from Santa Cruz, Bolivia.  I have heard that there are a couple of border cities into which to pass over to Brazil. 

Does anyone know which is the safest/easiest way to go through?

If so, is travelling by bus the only way? I've heard there's also a train that leaves from Santa Cruz to Brazil, via Corumba? Is this currently running? Does anyone have experience travelling to Brazil like this?
