Do you know how to save flt files? When I open efb and try to save it only allows me to save PLN files, but the popup says you can also save flt files, but how?
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Save FLT files from the cockpit EFB.
That is a typo on the screen.
Only .pln files can be saved.
You’re right. Weird though. I could have sworn I saw a SAVE / LOAD FLT File button somewhere. But I can’t find it now.
Man, I have strange dreams! 
When you save the file, put quotes around it. like…“KJFK.flt” this will save it as a .FLT file.
Then when you want to open/load it, type * . * and press enter to show all the files in the folder. The .FLT files will appear.
EDIT: You need to comment out/remove the following line in the file FirstFlightState=PREFLIGHT_GATE (it may say something other than preflight gate)