Once Phase 0 is complete, there will be two active Ethereum chains. For the sake of clarity let’s call them the Eth 1.0 chain (current, PoW main chain) and the Eth 2.0 chain (new Beacon Chain). During this phase, users will be able to migrate their ETH from the Eth 1.0 chain to the Eth 2.0 chain and become validators.
Does this mean that if I don't migrate my ETH to the 2.0 chain during Phase 0 that my ETH will not ever be migrated? What happens to users who miss this time window?