Converting a .sew file to a .jef file is as simple as saving it!
Note: You must open a .sew file into the design screen prior to converting to a .jef file.
Click on "File" on the Menu Toolbar. Click on the fifth entry in the drop-down menu, "Save As..."
The "Save As" box will come up in the middle of the design screen. The "Save as Type" box will only permit .jef.
The "File name" will come up as "Untitled." Type the name you want the design to be saved as.
Click the "Save" button.
The design is now converted to .jef.