Cart attribute data getting null when checkout form submitted

Attribute Data Recently Stopped Coming Through On Orders in additional section on shopify admin panel orders. we are setting attribute data in cart page by -

jQuery.post(window.Shopify.routes.root + ‘cart/update.js’, “attributes[bopis_data]=” + JSON.stringify(data));

but after click on checkout this attibute data value getting null and after placing the order attribute data is showing null in additional detail section also.

Hi, did you find any solution for this. I also get same issue.