anything precious about project- or import-tagged data?
Sometimes I'll encounter things with tagging indicating its government, project, survey, or other concrete source. If the object itself it is now wrong, should it the tagging just be ignored and object fixed? Are there any tags or info should add to indicate it has been moved or otherwise updated?
Examples:
1. Closed way for landuse surrounding parts of a village. Now badly wrong. Sometimes completely enclosed in an accurate landuse area. Old one tagged: {landuse=residential, source:date=2014, source=ehealthafrica.org}
2. A formally defined area where the ground truth is that at some point it was nonetheless clearly reshaped (cut into for housing in most cases), tagged: {leisure=nature_reserve, source=USFS Shapefile from http://www.vcgi.org/dataware}
3. a swamp with an outline that has greatly shrunk to scrub, but was tagged source=NJ2002LULC
4. badly wrong streets with badly wrong tags, and lots of tiger: tags. After I fix them, leave the TIGER info in any case? tiger seems to be a special case since there's so much. Is there more info about handling tiger info / that process anywhere?
5. now obsolete shapes of natural=wood, or landuse=retail, but with mystery codes in the tags.