Updating audited imports

[Zverik]

Consider this process:

• You prepare a new import.
• Mappers validate it, moving some points kilometers away, changing some tags.
• You upload the data to OSM.
• Later, you get new data.

When you conflate without using the old audit file:

• You upload new json and old audit to cf_audit
• Mappers validate points, not knowing what points are new and which came from the last time having been validated already.
• You get an updated audit file and upload as usual.

When you conflate with the old audit file:

• You upload only new json to cf_audit
• Mappers validate changes from old to new.
• You get a second audit file which you probably need to merge with the old one.

Do you even need the old audit file, given you have the data in osm? You can probably calculate it. But you don't know which changes were made by mappers and which are from the old version of the dataset. Do you need to?