yeah I made a couple of changes and save them, I confirm the file got updated too, I reloaded openLuup, still having my changes...
The only little issue I have it's a cache issue, when I change a rule, save it, re-open it, sometime it's the old version BUT the file timestamp is newer and opening a new browser show me the right version.
so there's something in your last openLuup version Feb 29 that fixed that too