[OSM-talk] Import guidelines proposal update

[Michael Kugelmann]

On 19.09.2012 23:45, Vincent de Chateau-Thierry wrote:
> The only criteria for removing French Cadastre data will be the value 
> of the source tag. 
That's a bad idea: if someone for what ever reason just decides to 
remove (or change) the "source=cadastre" tag of a object (and don't 
change anything else) you can't identify the object any more.
Or to be more precise: you need to use a lot of effort and check all 
versions of an object (this means: the whole planet) whether it once had 
the "source=cadastre" tag. But thats a lot of work to do. Much (!) more 
easy to identify all the object is if you can take all object created by 
a special account => just check the changesets.
Checking all versions of all objects is the thing we just went through 
with a lot of pain and effort: creating and using the redaction bot. And 
we are all aware that this was necessary but not nice and a lot of 
"unporoductive effort". So let's learn from the past and avoid possible 
issues in the future that can be done easily with very small aditional 
effort in the presence.


Best regards,
Michael.