WHOOPS the tracks are meant to just be Caught and Escape, "Progress" was a working name I thought I'd replaced all references to. Thanks for the unintended catch! I've updated the pdf with the proper nomenclature now.
(btw, if you want to see the "fill in a track, roll on it later" mechanic used in a more complete game, do check out Shawn Tomkins' Ironsworn!)