Needlessly Redundant Solutions.
It is the standard process if running the current updated version.

1. Open the return again.
Click on EF Now.
Standard process: Save, select return and hope it does not happen again.

2. Without Re-Opening.

From the HomeBase View: Select EF Center. Go to "All" or "Pending" then search for your desired return(s).
Select the Federal and any states that may apply.
(You can hold Ctrl and then select multiple returns or you can hold Shift to select multiple returns in a row)
After having the return(s) selected you can then click on "EF Now" an "Electronic Filing Options" Prompt will appear.
Standard process again: Select the appropriate Convert/Transmit options. Select "Ok" and you're set. This will work without opening the return(s). 

Recommend One return at a time. (Fed + State(s) on the same person is good)