prevent to add new

[1ucay]

Hi, It would be good to prevent save to db, if limit_saved_addresses exceed.
Now there is no "Add new" in select, but if you populated POST data, it will be saved.
So in functions

1. ajax_checkout_update
2. woocommerce_checkout_update_customer_data

there should be condition limit_saved_addresses as well.

Also it would be nice to have apply_filters( 'limit_saved_addresses', or something logic for prevent users save new address at all. We are importing address to database and our ecommerce dont allowed edit custom address ( we have b2b customers ).

Thank you