Shipping checkout flow setting is not recognized until first order with shipment is placed

Don't know if this is related, but a site I migrated from Drupal 7 to Drupal 9 was failing to display shipping panes for orders.

Turns out I was missing the order shipments field configuration. It seems this is added pragmatically on installing the commerce_shipping module, and I wasn't including it in my site configuration.

Adding these two configuration files re-instated the field and shipping works!

field.storage.commerce_order.shipments.yml
field.field.commerce_order.default.shipments.yml

I was having the same problem and #5 fixed it for me. I'm running Drupal 10.2.2, and commerce shipping 8.x-2.7.

Mine was a fresh install (not an upgrade). If you go to Configuration > Orders > Order Types and then click to fields, there should be a field there for shipments.
(/admin/commerce/config/order-types/default/edit/fields)

For some reason my install was missing this field. I had a Drupal 9 site running drupal commerce with almost the same setup, and I was able to export the needed config files and then imported them into my D10 site, and now the shipping information is showing up on my Order Information page on checkout.

In case it helps someone else you need to import these two .yml files:

field.storage.commerce_order.shipments.yml

langcode: en
status: true
dependencies:
  module:
    - commerce_order
    - commerce_shipping
id: commerce_order.shipments
field_name: shipments
entity_type: commerce_order
type: entity_reference
settings:
  target_type: commerce_shipment
module: core
locked: true
cardinality: -1
translatable: false
indexes: {  }
persist_with_no_fields: false
custom_storage: false

field.field.commerce_order.default.shipments.yml

langcode: en
status: true
dependencies:
  config:
    - commerce_order.commerce_order_type.default
    - field.storage.commerce_order.shipments
id: commerce_order.default.shipments
field_name: shipments
entity_type: commerce_order
bundle: default
label: Shipments
description: ''
required: false
translatable: false
default_value: {  }
default_value_callback: null
settings:
  handler: 'default:commerce_shipment'
  handler_settings: {  }
field_type: entity_reference

I am stuck at the same point.
I have updated from 9 to 10 and now users can`t get past login information.

How do I import these files and where. Thanks for any help.