Difference between FulfillmentLineItem vs FulfillmentOrderLineItem

Shopify Apps
1

Hi all,

I’m currently using version 2023-01 and plan to upgrade to 2024-04.

I’m using this query in version 2023-01

order(id: "123456789") {
            fulfillmentOrders(first: 10) {
              edges {
                node {
                  id
                  status
                  lineItems(first: 20, after: 'null') {
                    pageInfo {
                      hasNextPage
                    }
                    edges {
                      cursor
                      node {
                        id
                        totalQuantity
                        remainingQuantity
                        lineItem {
                          id
                          variant {
                            id
                            displayName
                          }
                        }
                      }
                    }
                  }
                }
              }
            }
          }

But in docs says that attribute lineItem will be deprecated in 2024-04. So I plan to switch to use the following query

order(id: "123456789") {
            fulfillmentOrders(first: 10) {
              edges {
                node {
                  id
                  status
                  fulfillments(first: 20, after: 'null') {
                    pageInfo {
                      hasNextPage
                    }
                    edges {
                      cursor
                      node {
                       fulfillmentLineItems (first: 20, after: 'null'){
                          edges {
                            node {
                              id
                              lineItem {
                                id
                                variant {
                                  id
                                }
                              }
                            }
                          }
                        }
                      }
                    }
                    }
                }
              }
            }
          }

My purpose is to get variant id. My wonder is there any difference between using those two?