I'm curious. When folks trade in an iMac that has maxed out RAM installed by the owner, does the owner restore the amount of RAM the iMac shipped with? For example, my iMac was purchased new with 16GB RAM. Over the years I slowly added more RAM and it now has 64GB. If I trade it in for a new iMac, do I remove all but 16GB of RAM before trading in, or do I remove ALL the RAM, or do leave all 64GB in the machine?