As to your first question I don't se a product_id in any of the downloaded files it has the following hope its not too much

v_products_model v_products_type v_products_image v_products_name_1 v_products_description_1 v_products_url_1 v_specials_price v_specials_date_avail v_specials_expires_date v_products_price v_products_weight v_product_is_call v_products_sort_order v_products_quantity_order_min v_products_quantity_order_units v_products_priced_by_attribute v_product_is_always_free_shipping v_date_avail v_date_added v_products_quantity v_manufacturers_name v_categories_name_1 v_tax_class_title v_status v_metatags_products_name_status v_metatags_title_status v_metatags_model_status v_metatags_price_status v_metatags_title_tagline_status v_metatags_title_1 v_metatags_keywords_1 v_metatags_description_1

the version number is Easy Populate 4.0.35.ZC - 04-29-2016 my products model is empty or blank but if i need to use them i can do a sql to change them to just 1001 to whatever ends up being