We are developing under several accounts (e.g. Dev1 and Dev2).
In order to organize the ownership, I have changed the ownership of some pages and cards to one account (Dev2 > Dev1).
Then the connection between the DataSet and the card got disconnected and the card is no longer visible.
For the card with a direct connection to the DataSet, I was able to recover by re-assigning the DataSet.
However, for the output DataSet that was processed by DataFlow, I cannot find a way to connect it to the card and it is still not visible.
It may be best to rebuild the card, but does anyone know how to connect it?