I don't know how to revert it and I'm NOT happy.
Comment from ADB52 on 8 October 2017 at 23:54
Have you looked at the change-sets? It all seems to have been done by one user, Anjko. You could revert all changes he made - all in other people's territory (including yours) by the way - and send him a carefully worded message about the rules for new sign-ups to OGF.
Comment from zhenkang on 9 October 2017 at 00:13
Well, how big are the changes? (I will not be very happy if I were you, since it is disruptive of someone's plans for that area.) Hope the newbie understands. I thought you were 'quite fine' with the edits in your country?
And I realised that city is on the edge towards Suria.
Comment from Luciano on 9 October 2017 at 00:55
The new user responsible for the vandalism was sent a warning from admin two days ago. Like most cases of this sort, the new user subsequently stopped editing but of course didn't bother apologizing.
Normally we advise new users to NOT try to fix their vandalism - they're much more likely to make things worse than better in such cases.
It is the responsibility of each territory's owner to monitor for vandalism and to make repairs as necessary. Most active users deal with vandalism all the time - you have no idea how many motorways and unorthogonal shopping centers I have deleted from my territories over the years. It's just a fact of OGF life. Sorry it has to be that way.
It is not hard to use the reverter, if you are using JOSM (which it seems you are). Just download the plugin - it's pretty easy to use as long as you apply it quickly (i.e. before other edits get overlaid on the changeset to be reverted). There is documentation here: https://wiki.openstreetmap.org/wiki/JOSM/Plugins/Reverter
Comment from zhenkang on 9 October 2017 at 03:25
Normally this happens if your territory is of significant size, like Kalm, Pretany, Ispelia, Ingerland, Norðurland, Darcodia etc. Some newbies also edit in reserved territories, even in territories in the unmapped continents. So if your territory is of a huge size like Commonia, this should happen from time to time. Maybe for those owners, put a 'Do not edit' sign somewhere like those in the reserved continents. (suggested)
Comment from Marcello on 9 October 2017 at 12:15
I have JOSM and can revert the change-sets if you want me to. You can indeed do it relatively easily yourself if you use JOSM with the plug-in, but you might do good to test it out with one small and controlled change-set made by yourself before you wipe out too much.
Comment from bhj867 on 9 October 2017 at 13:13
Thanks for telling me how to revert I'll do that now.
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