This plugin requires Vault, Towny and TownyNameUpdater. Town and Nation bank accounts will not reset using this economy plugin.
Conversion from Essentials Eco can be done using the command /icoimport.
Other economy plugins can be converted to Essentials Economy using the ess eco /baltop command, and then converted to iConomy using the above command.
iConomy 5.05 is avaliable for download here