Ah yes, you're right, I remember Darth explaining to a stacker about a Zeus wallet with ln funds, whereby they did something and it force closed their ln channels, as you say it was a process where the funds were converted to on chain and associated fees etc but most importantly they got their sats back albeit onchain 

h6j5dhc567g

The recovery process for Lightning is not a simple seed import. It's a channel restoration process. If your phone dies, you install Green on a new phone, restore with S1, and the app, communicating with Blockstream's servers, should use your stored channel state to attempt to reclaim the funds from your old channels. This is a cooperative process.