Were Ghosts able to reverse the final deaths of their Guardians after the Traveler woke up at the end of the Red War? We know that when Ghaul attached the cage to the Traveler it severed the Light from all Guardians, allowing the Cabal to deliver final deaths to countless Guardians. My question is that after the Traveler awoke and defeated Ghaul and restored the Light to everyone, were Ghosts able to resurrect their Guardians once more? 

We lost our Light until we found the Shard of the Traveler and were able to get it back, allowing Ghost to revive us once again, so would that have been possible for Ghosts who lost their Guardians during the assault on the City? 

I feel like the answer is no, as we know the attack severely crippled the Vanguard and the Last City, but as I said we were able to get our Light back so were others as well?