diff --git a/webextensions/api/browsingData.json b/webextensions/api/browsingData.json
index 2c1c4b7912fe60..2128d27c37cf39 100644
--- a/webextensions/api/browsingData.json
+++ b/webextensions/api/browsingData.json
@@ -28,11 +28,9 @@
               "mdn_url": "https://developer.mozilla.org/docs/Mozilla/Add-ons/WebExtensions/API/browsingData/DataTypeSet",
               "support": {
                 "chrome": {
-                  "version_added": true
-                },
-                "edge": {
-                  "version_added": "79"
+                  "version_added": "≤61"
                 },
+                "edge": "mirror",
                 "firefox": {
                   "version_added": "53"
                 },
@@ -57,11 +55,9 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true
-                },
-                "edge": {
-                  "version_added": "79"
+                  "version_added": "≤61"
                 },
+                "edge": "mirror",
                 "firefox": {
                   "version_added": "53"
                 },
@@ -86,11 +82,9 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true
-                },
-                "edge": {
-                  "version_added": "79"
+                  "version_added": "≤61"
                 },
+                "edge": "mirror",
                 "firefox": {
                   "version_added": "53"
                 },
@@ -115,11 +109,9 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true
-                },
-                "edge": {
-                  "version_added": "79"
+                  "version_added": "≤61"
                 },
+                "edge": "mirror",
                 "firefox": {
                   "version_added": false
                 },
@@ -136,11 +128,9 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true
-                },
-                "edge": {
-                  "version_added": "79"
+                  "version_added": "≤61"
                 },
+                "edge": "mirror",
                 "firefox": {
                   "version_added": "53"
                 },
@@ -165,11 +155,9 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true
-                },
-                "edge": {
-                  "version_added": "79"
+                  "version_added": "≤61"
                 },
+                "edge": "mirror",
                 "firefox": {
                   "version_added": "53"
                 },
@@ -194,11 +182,9 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true
-                },
-                "edge": {
-                  "version_added": "79"
+                  "version_added": "≤61"
                 },
+                "edge": "mirror",
                 "firefox": {
                   "version_added": "57"
                 },
@@ -217,11 +203,9 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true
-                },
-                "edge": {
-                  "version_added": "79"
+                  "version_added": "≤61"
                 },
+                "edge": "mirror",
                 "firefox": {
                   "version_added": "57"
                 },
@@ -240,11 +224,9 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true
-                },
-                "edge": {
-                  "version_added": "79"
+                  "version_added": "≤61"
                 },
+                "edge": "mirror",
                 "firefox": {
                   "version_added": "53"
                 },
@@ -263,11 +245,9 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true
-                },
-                "edge": {
-                  "version_added": "79"
+                  "version_added": "≤61"
                 },
+                "edge": "mirror",
                 "firefox": {
                   "version_added": "53"
                 },
@@ -286,11 +266,9 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true
-                },
-                "edge": {
-                  "version_added": "79"
+                  "version_added": "≤61"
                 },
+                "edge": "mirror",
                 "firefox": {
                   "version_added": false
                 },
@@ -307,11 +285,9 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true
-                },
-                "edge": {
-                  "version_added": "79"
+                  "version_added": "≤61"
                 },
+                "edge": "mirror",
                 "firefox": {
                   "version_added": "53"
                 },
@@ -648,11 +624,9 @@
             "mdn_url": "https://developer.mozilla.org/docs/Mozilla/Add-ons/WebExtensions/API/browsingData/removeLocalStorage",
             "support": {
               "chrome": {
-                "version_added": true
-              },
-              "edge": {
-                "version_added": "79"
+                "version_added": "≤61"
               },
+              "edge": "mirror",
               "firefox": {
                 "version_added": "57",
                 "notes": "<code>removalOptions.since</code> is not supported."