It becomes common now. In every pump, I noticed several projects revive again and start making big steps. This year it is happening with many projects. People did bounty in 2017-2018 and forgot the token because the token becomes valueless after a period, but right now projects like WPP, Spark coin came back and pumped insanely! One of my colleagues bought 13$ worth WPP coin and that became 1150$ months ago! After seeing my friends' income from dead bounty coins, I start checking my old wallets, lol! I think this will happen more in the real bull run, so, check your wallet regularly!