--- a/testing/mozharness/configs/merge_day/central_to_aurora.py
+++ b/testing/mozharness/configs/merge_day/central_to_aurora.py
@@ -6,17 +6,16 @@ config = {
         {"file": "config/milestone.txt", "suffix": ""},
     ],
     "replacements": [
         # File, from, to
         ("{}/{}".format(d, f),
         "ac_add_options --with-branding=mobile/android/branding/nightly",
         "ac_add_options --with-branding=mobile/android/branding/aurora")
         for d in ["mobile/android/config/mozconfigs/android-api-15/",
-                  "mobile/android/config/mozconfigs/android-api-9-10-constrained/",
                   "mobile/android/config/mozconfigs/android-x86/"]
         for f in ["debug", "nightly", "l10n-nightly"]
     ] + [
         # File, from, to
         ("{}/{}".format(d, f),
         "ac_add_options --with-branding=browser/branding/nightly",
         "ac_add_options --with-branding=browser/branding/aurora")
         for d in ["browser/config/mozconfigs/linux32",
@@ -26,23 +25,21 @@ config = {
                   "browser/config/mozconfigs/macosx64"]
         for f in ["debug", "nightly", "l10n-mozconfig"]
     ] + [
         # File, from, to
         ("{}/l10n-nightly".format(d),
         "ac_add_options --with-l10n-base=../../l10n-central",
         "ac_add_options --with-l10n-base=..")
         for d in ["mobile/android/config/mozconfigs/android-api-15/",
-                  "mobile/android/config/mozconfigs/android-api-9-10-constrained/",
                   "mobile/android/config/mozconfigs/android-x86/"]
     ] + [
         # File, from, to
         (f, "ac_add_options --enable-profiling", "") for f in
         ["mobile/android/config/mozconfigs/android-api-15/nightly",
-         "mobile/android/config/mozconfigs/android-api-9-10-constrained/nightly",
          "mobile/android/config/mozconfigs/android-x86/nightly",
          "browser/config/mozconfigs/linux32/nightly",
          "browser/config/mozconfigs/linux64/nightly",
          "browser/config/mozconfigs/macosx-universal/nightly",
          "browser/config/mozconfigs/win32/nightly",
          "browser/config/mozconfigs/win64/nightly"]
     ] + [
         # File, from, to