NO, the common OSM rule is: Contact the user via changeset comment. This comments will be send to the users mail address too.
benefit: anybody can follow this discussion (PN is “private”) and eaven enter the discussion.
Regard
walter
btw: i got this answer from talk-lt:
"Some admin boundaries, which have been added without proper
agreement with data source have been removed by the person who had
mapped them. Only outer ways have been removed without removing the
relation itself.
We’re in the process of cleaning that up.
Thank you for the heads up!"