How can you upgrade an existing graphenedb instance to the latest version?
I tried:
heroku addons:add graphenedb --version v220
Adding graphenedb on myApp ... failed
! That type of add-on can only exist once per app and it already exists for myApp.
Or is it not possible and should I migrate the data to a new instance with the latest version?
BTW, I also tried heroku addons:upgrade
. That was NOT what I was looking for!