Sound Devices makes a little free utility called Wave Agent which will split poly .wav files into multiple mono .wav files, or join mono .wav files into single poly .wav files.
Since I derped and recorded a bunch of individual tracks the other day, it was nice to have a little utility to sew them all together again.
Shooting a reel or "demo" for a movie in a very beautiful bar in Astoria.
And also the Zoom F8 worked for two whole days recording 3 and 4 tracks (plus stereo) to two SD cards without failing! Woo! This is with the latest update to their firmware. I ran a backup to a Tascam handheld recorder anyway, but it was nice to not have any failures on the F8.