Hi Christian,
Unfortunately there is no automatic way to do this. You can write a
script yourself that copies a campaign from production to the sandbox,
and the AdWords API .NET client library includes a similar utility:
http://code.google.com/p/google-api-adwords-dotnet/source/browse/trunk/s
After some problema getting used to the Adwords API I finally got it
working, now I'd like to run some deep tests, like creating campagins,
changing bids, ... but I wan't start this tests in production. Is
there a way to export one or more productions campaigns to the sandbox
environment to test it