Geth Dumpconfig and Archive Node

for a full archive node on eth i can use the flag gcmode=archive and sync=full. gcmode is invalid for etc, is there an equivalent for maintaining states so that internal transactions can be parsed? is the flag --slow the way to store this info?

Then geth for eth has a dumpconfg that generates a config file based on cmd line flags, is there something similar for etc? or does someone have an example config file if not?