I believe the problem might be more common when exporting data from one system to another. I've written code to migrate (and merge) large datasets from old lega

I believe the problem might be more common when exporting data from one system to another. I've written code to migrate (and merge) large datasets from old legacy systems. I needed quite a lot of heuristics and "best-effort" transformations in order to deal with data inconsistencies... mostly string manipulations where it's not hard to imagine bugs like this happening.