If you need to edit or remove custom fields from more than one product at a time, there is a faster way to do so, rather using the Add/Edit Product pages. From the Control Panel navigation, select Products > Manage Custom Fields.
To rename an existing custom field (e.g. you want to change “Wine Region” to “Wine Regions”), select the field, enter a new name and click on the Update button. Use the Show Products button to view a list of products that are currently using the selected field. If no products are found, ProductCart will ask you whether you would like to delete the custom field from the database.
To rename an existing custom search field value, select the field value that you would like to rename by choosing from the drop-down menus. Note that the second drop-down menu is populated with values on after you make a selection from the first drop-down. Enter a new value in the New Value field, and then click on Update. Use the Show Products button to view a list of products that are currently using the selected custom search field value. If no products are found, ProductCart will ask you whether you would like to delete it from the database.
To remove an existing custom field from N products, select the field from the corresponding drop-down menu, and then click on Select Products. You will be shown a list of products that are currently using this field. Select the ones from which you would like the field to be removed, and then press Update Selected. Use the Show Products button to preview a list of products that are currently using the selected custom field. If no products are found, ProductCart will ask you whether you would like to delete it from the database.
To speed up the process of adding custom fields to multiple products, ProductCart allows you to copy a field onto other products. Click on Copy to Another Product from the Custom Product Fields - Summary page. Then, select which field you would like to copy.
You can only copy one field at a time. This is because each product can contain a maximum of three custom search fields and three custom input fields: if the product already contained fields and you were copying multiple fields at once, ProductCart would not know which fields to assign and which to ignore.
On the following screen, check the products to which you would like to assign the selected field. If a product already has been assigned all available fields (unlimited search fields in ProductCart v3.5 and above, up to 3 input fields), the product will not be listed. If you attempt to add a new search or input field to a product that already has respectively the maximum number of search fields or the maximum number of custom fields assigned to it, the field will not be assigned to the product.