diff --git a/css/at-rules/position-try.json b/css/at-rules/position-try.json
index 2bcf25d4a85196..50a353c77aca28 100644
--- a/css/at-rules/position-try.json
+++ b/css/at-rules/position-try.json
@@ -16,8 +16,7 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "147"
             },
             "firefox_android": "mirror",
             "oculus": "mirror",
diff --git a/css/properties/position-visibility.json b/css/properties/position-visibility.json
index 8c38f07cdb7fa3..80c487fe31ddbb 100644
--- a/css/properties/position-visibility.json
+++ b/css/properties/position-visibility.json
@@ -15,8 +15,7 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "147",
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "147"
             },
             "firefox_android": "mirror",
             "oculus": "mirror",
diff --git a/css/types/anchor-size.json b/css/types/anchor-size.json
index dffacea81fcf86..441debcb1ada2a 100644
--- a/css/types/anchor-size.json
+++ b/css/types/anchor-size.json
@@ -16,8 +16,7 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1972610"
+              "version_added": "147"
             },
             "firefox_android": "mirror",
             "oculus": "mirror",
diff --git a/css/types/anchor.json b/css/types/anchor.json
index a850abad706a15..2b66a6ae7919f8 100644
--- a/css/types/anchor.json
+++ b/css/types/anchor.json
@@ -16,8 +16,7 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "preview",
-              "impl_url": "https://bugzil.la/1838746"
+              "version_added": "147"
             },
             "firefox_android": "mirror",
             "oculus": "mirror",