All of the user's 8 changesets at Lac du Der-Chantecoq: 147258986, 147259044, 147259115, 147259218, 147259360, 147259432, 147259458, 147259539
are reverted as very damaging to the map. The correct lake name was already present on the multipolygon and did not need adding to the lake outer way, and all of the other changes were deletion of well mapped features which looks like vandalism but might possibly be new mapper inexperience.  A reply from user webhound on these changes (and others) would be appreciated.