diff --git a/amendments.json b/amendments.json
index e5c42fc1c..9c7f052e5 100644
--- a/amendments.json
+++ b/amendments.json
@@ -281,6 +281,22 @@
       "id": 23
     }
   ],
+  "rtcicecandidatetype-enum": [
+    {
+      "description": "Add RTCIceCandidate.relayProtocol",
+      "pr": 2763,
+      "tests": [
+	"webrtc/idlharness.https.window.html"
+      ],
+      "testUpdates": [
+	"web-platform-tests/wpt#36157"
+      ],
+      "difftype": "append",
+      "type": "addition",
+      "status": "candidate",
+      "id": 16
+    }
+  ],
   "usernameFragment-desc": [
     {
       "description": "Add RTCIceCandidate.relayProtocol",
@@ -335,21 +351,8 @@
   ],
   "addtransceiver-algo": [
     {
-      "description": "TypeError unless all or none of encodings have rids",
-      "pr": 2774,
-      "tests": [
-	"webrtc/RTCRtpParameters-encodings.html"
-      ],
-      "testUpdates": [
-	"web-platform-tests/wpt#37477"
-      ],
-      "type": "correction",
-      "status": "candidate",
-      "id": 18
-    },
-    {
-      "description": "TypeError on duplicate rids",
-      "pr": 2775,
+      "description": "TypeError unless all or none of encodings have rids and on duplicate rids",
+      "pr": [2774, 2775],
       "tests": [
 	"webrtc/RTCRtpParameters-encodings.html"
       ],
@@ -398,6 +401,19 @@
       "type": "correction",
       "status": "candidate",
       "id": 24
+    },
+    {
+      "description": "Add codec to RTCRtpEncodingParameters",
+      "type": "addition",
+      "status": "candidate",
+      "id": 49,
+      "pr": 2985,
+      "tests": [
+	"webrtc/RTCRtpParameters-codec.html"
+      ],
+      "testUpdates": [
+	"web-platform-tests/wpt#47663"
+      ]
     }
   ],
   "setparameters-algo": [
@@ -460,6 +476,19 @@
       "type": "correction",
       "status": "candidate",
       "id": 32
+    },
+    {
+      "description": "Add codec to RTCRtpEncodingParameters",
+      "type": "addition",
+      "status": "candidate",
+      "id": 49,
+      "pr": 2985,
+      "tests": [
+	"webrtc/RTCRtpParameters-codec.html"
+      ],
+      "testUpdates": [
+	"web-platform-tests/wpt#47663"
+      ]
     }
   ],
   "create-sender-algo": [
@@ -664,7 +693,7 @@
       "description": "Create RTCRtpCodec dictionary and reuse in RTCRtpCodecCapability and RTCRtpCodecParameters definitions",
       "pr": 2834,
       "testUpdates": "not-testable",
-      "type": "modify",
+      "type": "correction",
       "status": "candidate",
       "id": 29
     }
@@ -937,11 +966,27 @@
   ],
   "rtcrtpencodingparamters-attributes-active": [
     {
-      "description": "Add codec to RTCRtpEncodingParameters, moved from webrtc-extensions",
+      "description": "Add codec to RTCRtpEncodingParameters",
+      "type": "addition",
+      "status": "candidate",
+      "difftype": "append",
+      "id": 49,
+      "pr": 2985,
+      "tests": [
+	"webrtc/RTCRtpParameters-codec.html"
+      ],
+      "testUpdates": [
+	"web-platform-tests/wpt#47663"
+      ]
+    }
+  ],
+  "stable-signaling-1": [
+    {
+      "description": "Add codec to RTCRtpEncodingParameters",
       "type": "addition",
       "status": "candidate",
       "difftype": "append",
-      "id": 47,
+      "id": 49,
       "pr": 2985,
       "tests": [
 	"webrtc/RTCRtpParameters-codec.html"
diff --git a/base-rec.html b/base-rec.html
index b88c83de8..56866969b 100644
--- a/base-rec.html
+++ b/base-rec.html
@@ -3396,7 +3396,7 @@ <h5 id="x4-4-1-5-set-the-session-description"><bdi class="secno">4.4.1.5 </bdi>
                           steps:
                         </p>
                         <ol>
-                          <li>
+                          <li id="stable-signaling-1">
                             <p class="needs-test">
                               For any <var>transceiver</var> that was removed
                               from the <a data-link-type="dfn" href="#transceivers-set" class="internalDFN" id="ref-for-transceivers-set-11">set of transceivers</a> in a previous
diff --git a/webrtc.html b/webrtc.html
index eff09526e..c44f4a6a8 100644
--- a/webrtc.html
+++ b/webrtc.html
@@ -2796,7 +2796,7 @@ <h4>
                           steps:
                         </p>
                         <ol>
-                          <li>
+                          <li id="stable-signaling-1">
                             <p class="needs-test">
                               For any <var>transceiver</var> that was removed
                               from the [= set of transceivers =] in a previous
@@ -2811,7 +2811,7 @@ <h4>
                               firing on these objects in a queued task.
                             </p>
                           </li>
-                          <li>
+                          <li class="add-to-stable-signaling-1">
                             <p>For each <var>transceiver</var> in <var>connection</var>'s [= set of transceivers =]:</p>
                             <ol>
                               <li>
@@ -6565,7 +6565,7 @@ <h4>
               {{RTCIceTcpCandidateType/active}} ICE TCP candidates.
             </p>
           </section>
-          <section>
+          <section id="rtcicecandidatetype-enum">
             <h4>
               <dfn>RTCIceCandidateType</dfn> Enum
             </h4>
@@ -6629,7 +6629,7 @@ <h4>
               </table>
             </div>
           </section>
-          <section>
+          <section class="add-to-rtcicecandidatetype-enum">
             <h4>
               <dfn>RTCIceServerTransportProtocol</dfn> Enum
             </h4>