I recently took the time to drive newly paved roads in my neighborhood... fully and correctly edited them into the map... marked portions as still under construction (because they're not yet fully open to the public although many trucks are driving there.) This involved some significant investment of time and effort.

The roads even showed up on the main Waze map, as they should.

And then sometime in the last week, all of that work was deleted.

a) Why would someone do that?
b) Is there any undelete available via any means?
c) Is this why people lock their work?

I am more than a little frustrated. Why bother editing if our work can just *poof* disappear like that?!