AFAIK, 1.04 is the latest firmware for the Z17 - I'm not sure if that has anything directly to do with the params not sticking, but may be nice to get overall.
I was able to get those parameters to stick via the Basic Z-Wave Tool, but I can't recall the exact step sequence I used... I don't use that tool enough to be fluent, so I end up doing a lot of trial-&-error each time I use it. But I somehow did successfully get that auto-off set up for 1 second.
After all that effort, I ended up using the Zooz Garage Door app to get a nice-looking tile for the dashboard, and that app has a relay auto-off option built into it to (can be enabled or disabled), so if you can't get those params to stick, that's another option to consider.
Though that Zooz Garge Door app is written for the Z16, it works great for the Z17 too.
Good luck!