You can open an existing data feed that you created with the classic data feed editor and transfer it to the new editor.
Note that not all operators available in the previous feed editor are supported by the new data feed editor. When you open a data feed that contains an unsupported operator a corresponding message is displayed.
Procedure
Click Switch editor -> Switch editor in the program bar.
The selected data feed opens in the new data feed editor.
Click the icon ->
Save.
Enter a new name and click Save as.
The data feed is saved as a copy with the new name.
When you save a data feed in the new editor it cannot be opened with the classic feed editor again. In order to keep the original data feed, save a copy of the data feed.