Have you tried this 
approach: 
http://web2py.com/books/default/chapter/29/06/the-database-abstraction-layer#CSV--all-tables-at-once-

It will generate new ids but still maintain all references.

Anthony

On Sunday, January 17, 2016 at 1:20:10 PM UTC-5, Alex Glaros wrote:
>
> sorry Denes, I forgot to explain that I'm migrating to Postgres and doing 
> all tables at once.  Would like to automate the ."id" removal.  Any ideas 
> on that?
>
>     for table in db.tables: 
>         rows = db(db[table]).select()
>         table_name =  str([table]) + '.csv'
>         rows.export_to_csv_file(open(table_name, 'wb'))
>
> thanks
>
> Alex
>

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