If you choose to keep your own, as it seems you have there, then the new default set would not be added to your system. I can certainly go ahead and add those as a cloud customer if you would like me to go ahead and do that? Would you like everything in the ranks/rules/badges areas removing entirely and replacing with the new default sets?
With yours, as a self hosted customer you would need to do this using the files in your download. You can find the XML import files for these in \applications\core\data\achievements