go to old node and do this :
cd ~/chainpoint-node
then :
make auth-keys
that will auth put your auth keys, the first number is your wallet address
the second is your auth  key
take the auth key and save it to a notefile
then head over to new node
and do this :
cd ~/chainpoint-node
make auth-key-update KEY=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
The key you see there is a sample key(edited)
you would need to use your own key
then after you done that
do this :
make upgrade
then you will see in your logs that the node is working