I've been working on a game in I6 off and on for many years. I'd love to shift it over to I7 but doing it manually seems a daunting task. I have working code and also a compiled .z8 file.
I seem to remember that when Inform 7 was first released, there was a way to port I6 code to I7, but only for Mac. (I'm on PC, by the way.) I don't think even that exists anymore so I'm expecting the answer 'no', but one lives in hope.
Alternatively, is there a rough guide for how to approach a conversion?