[Imports] Mechanical correction of wrong values proposal

[Carlos Dávila]

Hello

In 2012 a large dataset was imported from Spanish National Geographic 
Institute containing 9.690 survey points. It has recently been noticed 
that elevation values contained several errors. Currently there are 
still 8.546 points that keep the original data and that should be 
corrected. I would like to correct all of them by a simple search and 
replace process described at [1]. The issue has been reported to talk-es 
and discussion will be held there. As objects to be changed come from an 
import, I have considered convenient to inform also this list to hear 
your opinion.

Regards

Carlos Dávila (user cdavila)

[1] https://wiki.openstreetmap.org/wiki/Automated_Edits/cdavila