CCK export / import error on text fields

When I export then import my fields from one Content Type to another, I get errors on text fields. Looking into it so far this is what I have been able to determine:
The error and SQL is this when reported by Drupal:

Error #: 1062
Error: Duplicate entry '28' for key 1

Query: 
INSERT INTO content_field_body_content_title (vid, nid, field_body_content_title_value, field_body_content_title_format) 
SELECT vid, nid, field_body_content_title_value, field_body_content_title_format 
FROM content_type_page

However, when trying this statement directly on the DB I get a different error - I have no idea why the error is different:

INSERT INTO content_field_body_content_title( vid, nid, field_body_content_title_value, field_body_content_title_format )
SELECT vid, nid, field_body_content_title_value, field_body_content_title_format
FROM content_type_page

MySQL said: #1054 - Unknown column 'field_body_content_title_value' in 'field list' 

Looking at this it looks like the error would be coming from the SELECT part of the SQL, so just to verify, here's the DB's response to the SELECT:

SELECT vid, nid, field_body_content_title_value, field_body_content_title_format
FROM content_type_page

Following is the import text
MySQL said: #1054 - Unknown column 'field_body_content_title_value' in 'field list' 

Attached in the import text created by exporting the field.