Bulk Removal Of Options

Hi, I'm trying to remove the global options for 600 out of 1200 product using the import function. However, if I add in a black data for option, it will not remove the existing one.

How do I bulk remove options? Please help.

probably best to delete the option and then re add it for the products you want

Managed to do this by using mysqladmin. Running query

DELETE FROM `cscart_product_global_option_links` WHERE `product_id`IN (4308,4473,4744,6220,6224,6225,6226,6227,6228,6229,6230,6231,6239,6240,6402,6403,6404...)