diff --git a/specification/billing/resource-manager/Microsoft.Billing/preview/2018-11-01-preview/billing.json b/specification/billing/resource-manager/Microsoft.Billing/preview/2018-11-01-preview/billing.json
index e9c47f7b2ec5..5758a1e9f9f7 100644
--- a/specification/billing/resource-manager/Microsoft.Billing/preview/2018-11-01-preview/billing.json
+++ b/specification/billing/resource-manager/Microsoft.Billing/preview/2018-11-01-preview/billing.json
@@ -421,19 +421,6 @@
               "$ref": "#/definitions/InvoiceSectionListResult"
             }
           },
-          "202": {
-            "description": "Accepted. InvoiceSection creation is in progress.",
-            "headers": {
-              "Location": {
-                "description": "GET this URL to retrieve the status of the asynchronous operation.",
-                "type": "string"
-              },
-              "Retry-After": {
-                "description": "The amount of delay to use while the status of the operation is checked. The value is expressed in seconds.",
-                "type": "string"
-              }
-            }
-          },
           "default": {
             "description": "Error response describing why the operation failed.",
             "schema": {
@@ -504,6 +491,45 @@
         }
       }
     },
+    "/providers/Microsoft.Billing/billingAccounts/{billingAccountName}/billingProfiles/{billingProfileName}/invoiceSections": {
+      "get": {
+        "tags": [
+          "InvoiceSections"
+        ],
+        "x-ms-examples": {
+          "InvoiceSectionsListByBillingProfileName": {
+            "$ref": "./examples/InvoiceSectionsListByBillingProfileName.json"
+          }
+        },
+        "operationId": "InvoiceSections_ListByBillingProfileName",
+        "description": "Lists all invoice sections under a billing profile for a user which he has access to.",
+        "parameters": [
+          {
+            "$ref": "#/parameters/apiVersionParameter"
+          },
+          {
+            "$ref": "#/parameters/billingAccountNameParameter"
+          },
+          {
+            "$ref": "#/parameters/billingProfileNameParameter"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK. The request has succeeded.",
+            "schema": {
+              "$ref": "#/definitions/InvoiceSectionListResult"
+            }
+          },
+          "default": {
+            "description": "Error response describing why the operation failed.",
+            "schema": {
+              "$ref": "#/definitions/ErrorResponse"
+            }
+          }
+        }
+      }
+    },
     "/providers/Microsoft.Billing/billingAccounts/{billingAccountName}/listInvoiceSectionsWithCreateSubscriptionPermission": {
       "get": {
         "tags": [
@@ -541,19 +567,6 @@
               "$ref": "#/definitions/InvoiceSectionListResult"
             }
           },
-          "202": {
-            "description": "Accepted. InvoiceSection creation is in progress.",
-            "headers": {
-              "Location": {
-                "description": "GET this URL to retrieve the status of the asynchronous operation.",
-                "type": "string"
-              },
-              "Retry-After": {
-                "description": "The amount of delay to use while the status of the operation is checked. The value is expressed in seconds.",
-                "type": "string"
-              }
-            }
-          },
           "default": {
             "description": "Error response describing why the operation failed.",
             "schema": {
@@ -1898,6 +1911,36 @@
         }
       }
     },
+    "/providers/Microsoft.Billing/billingAccounts/{billingAccountName}/invoiceSections/{invoiceSectionName}/elevate": {
+      "post": {
+        "description": "Elevates the caller's access to match their billing profile access.",
+        "operationId": "InvoiceSections_ElevateToBillingProfile",
+        "x-ms-examples": {
+          "Elevate": {
+            "$ref": "./examples/ElevateInvoiceSection.json"
+          }
+        },
+        "parameters": [
+          {
+            "$ref": "#/parameters/billingAccountNameParameter"
+          },
+          {
+            "$ref": "#/parameters/invoiceSectionNameParameter"
+          }
+        ],
+        "responses": {
+          "204": {
+            "description": "Elevated the caller's access to the invoice section."
+          },
+          "default": {
+            "description": "Unexpected error.",
+            "schema": {
+              "$ref": "#/definitions/ErrorResponse"
+            }
+          }
+        }
+      }
+    },
     "/providers/Microsoft.Billing/billingAccounts/{billingAccountName}/invoiceSections/{invoiceSectionName}/initiateTransfer": {
       "post": {
         "description": "Initiates the request to transfer the GTM or legacy subscriptions or RIs to GTM.",
@@ -1918,9 +1961,6 @@
             "$ref": "#/parameters/initiateTransferRequestParameter"
           }
         ],
-        "tags": [
-          "AIPController"
-        ],
         "responses": {
           "200": {
             "description": "Initiated transfer details.",
@@ -1957,9 +1997,6 @@
             "$ref": "#/parameters/transferNameParameter"
           }
         ],
-        "tags": [
-          "AIPController"
-        ],
         "responses": {
           "200": {
             "description": "Details of transfer.",
@@ -1994,9 +2031,6 @@
             "$ref": "#/parameters/transferNameParameter"
           }
         ],
-        "tags": [
-          "AIPController"
-        ],
         "responses": {
           "200": {
             "description": "Details of canceled transfer.",
@@ -2030,9 +2064,6 @@
             "$ref": "#/parameters/invoiceSectionNameParameter"
           }
         ],
-        "tags": [
-          "AIPController"
-        ],
         "responses": {
           "200": {
             "description": "List of transfers initiated from this invoice section.",
@@ -2069,9 +2100,6 @@
             "$ref": "#/parameters/acceptTransferRequestParameter"
           }
         ],
-        "tags": [
-          "AIPController"
-        ],
         "responses": {
           "200": {
             "description": "Details of the accepted transfer.",
@@ -2102,9 +2130,6 @@
             "$ref": "#/parameters/transferNameParameter"
           }
         ],
-        "tags": [
-          "AIPController"
-        ],
         "responses": {
           "200": {
             "description": "Details of the declined transfer.",
@@ -2135,9 +2160,6 @@
             "$ref": "#/parameters/transferNameParameter"
           }
         ],
-        "tags": [
-          "AIPController"
-        ],
         "responses": {
           "200": {
             "description": "Details of the transfers with given Id.",
@@ -2163,9 +2185,6 @@
             "$ref": "./examples/ListRecipientTransfers.json"
           }
         },
-        "tags": [
-          "AIPController"
-        ],
         "responses": {
           "200": {
             "description": "List of transfers received by caller.",
diff --git a/specification/billing/resource-manager/Microsoft.Billing/preview/2018-11-01-preview/examples/ElevateInvoiceSection.json b/specification/billing/resource-manager/Microsoft.Billing/preview/2018-11-01-preview/examples/ElevateInvoiceSection.json
new file mode 100644
index 000000000000..7993bc6e1840
--- /dev/null
+++ b/specification/billing/resource-manager/Microsoft.Billing/preview/2018-11-01-preview/examples/ElevateInvoiceSection.json
@@ -0,0 +1,12 @@
+{
+  "parameters": {
+    "api-version": "2018-08-01-preview",
+    "billingAccountName": "billingAccountName",
+    "invoiceSectionName": "invoiceSectionName"
+  },
+
+  "responses": {
+    "204": {
+    }
+  }
+}
\ No newline at end of file
diff --git a/specification/billing/resource-manager/Microsoft.Billing/preview/2018-11-01-preview/examples/InvoiceSectionsListByBillingProfileName.json b/specification/billing/resource-manager/Microsoft.Billing/preview/2018-11-01-preview/examples/InvoiceSectionsListByBillingProfileName.json
new file mode 100644
index 000000000000..06936c1697fe
--- /dev/null
+++ b/specification/billing/resource-manager/Microsoft.Billing/preview/2018-11-01-preview/examples/InvoiceSectionsListByBillingProfileName.json
@@ -0,0 +1,31 @@
+{
+  "parameters": {
+    "api-version": "2018-11-01-preview",
+    "billingAccountName": "billingAccountName",
+    "billingProfileName": "billingProfileName"
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "value": [
+          {
+            "id": "/providers/Microsoft.Billing/billingAccounts/{billingAccountName}/invoiceSections/invoiceSectionId1",
+            "name": "invoiceSectionId1",
+            "type": "Microsoft.Billing/invoiceSections",
+            "properties": {
+              "displayName": "invoiceSectionName1"
+            }
+          },
+          {
+            "id": "/providers/Microsoft.Billing/billingAccounts/{billingAccountName}/invoiceSections/invoiceSectionId2",
+            "name": "invoiceSectionId2",
+            "type": "Microsoft.Billing/invoiceSections",
+            "properties": {
+              "displayName": "invoiceSectionName2"
+            }
+          }
+        ]
+      }
+    }
+  }
+}
\ No newline at end of file