Ok.
I worked this one out.
The problem is caused by a conflict in priorities of the do_action.
Both ACF and WPSC have a ‘save_post’ with a priority of 10.
This is the referring article
http://support.advancedcustomfields.com/forums/topic/text-area-fields-are-not-saving-on-update/
To fix this without hacking the WPSC file (Which gets overwritten on an update) then add this to your functions.php file.
if( has_action( 'save_post', 'wpsc_admin_submit_product' ) )
{
remove_action( 'save_post', 'wpsc_admin_submit_product' );
add_action( 'save_post', 'wpsc_admin_submit_product', 1, 2 );
}
This will replace the ‘save_post’, ‘wpsc_admin_submit_product’ do_action with one that has a lower priority.
This works for me and hopefully you.
