Then I started this example locally in browser and tried to reload data, save data and manually check/uncheck autoRenew column check. beforeToggle fires only on mouse click for me but not on store.load().
Please attach example which shows your problem here.
You could use the same php one form distribution zip.
Our grid is a TreeGrid , and i realized the "beforeToggle and toggle" is being fire on the "Record" that have leaves . Also when I click on the "button" to "show the leaves records" is fired for each "record" child of the parent record....