The Shelley hard fork: all you need to know

Question about ITN rewards ???

In offical news we now can see that rewards from ITN will be visible throw new Daedalus wallet.

My problem is that I was staking via paper wallet !?! I know that many think that that was impossible, the complete discussion about that is here:

My question is; can I recover my testnet wallet from Daedalus, with 21 phrase key ???
If not; how can I withdraw my ITN rewards ?