Board Thread:Questions and Answers/@comment-5469271-20180207155440/@comment-32510639-20180207164853

Go to your old box and select export data to create a file with all your cards. Then create a box on the new site, you have to create the box manually, then select import data.

To create the new box, go to settings and add a new box, you will need to name it then set it as active.