When the bulk importer flags shots that are being updated (color coded blue) instead of created new (green), it would be great to have an indication of which fields were being updated, record by record.
Even better would be a before/after value (e.g. 'you're about to update the "frames" field, which was 805, to 871').
Better yet would be a "line-item veto" on each field about to be updated.
