diff --git a/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj b/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj
index 165b618a60..9ee83b1d88 100644
--- a/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj
+++ b/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj
@@ -598,17 +598,17 @@
     <Compile Include="Traits\World\WeatherOverlay.cs" />
     <Compile Include="Traits\World\ActorSpawnManager.cs" />
     <Compile Include="Traits\ActorSpawner.cs" />
-    <Compile Include="UpdateRules\Rules\20180923\RemoveAttackIgnoresVisibility.cs" />
-    <Compile Include="UpdateRules\Rules\20180923\RemovedDemolishLocking.cs" />
-    <Compile Include="UpdateRules\Rules\20180923\RemoveNegativeDamageFullHealthCheck.cs" />
-    <Compile Include="UpdateRules\Rules\20180923\RemoveResourceExplodeModifier.cs" />
-    <Compile Include="UpdateRules\Rules\20180923\RenameCrateActionNotification.cs" />
-    <Compile Include="UpdateRules\Rules\20180923\CloakRequiresConditionToPause.cs" />
-    <Compile Include="UpdateRules\Rules\20180923\MergeCaptureTraits.cs" />
-    <Compile Include="UpdateRules\Rules\20180923\RemovedNotifyBuildComplete.cs" />
-    <Compile Include="UpdateRules\Rules\20180923\ChangeTakeOffSoundAndLandingSound.cs" />
-    <Compile Include="UpdateRules\Rules\20180923\AddCarryableHarvester.cs" />
-    <Compile Include="UpdateRules\Rules\20180923\RequireProductionType.cs" />
+    <Compile Include="UpdateRules\Rules\20181215\RemoveAttackIgnoresVisibility.cs" />
+    <Compile Include="UpdateRules\Rules\20181215\RemovedDemolishLocking.cs" />
+    <Compile Include="UpdateRules\Rules\20181215\RemoveNegativeDamageFullHealthCheck.cs" />
+    <Compile Include="UpdateRules\Rules\20181215\RemoveResourceExplodeModifier.cs" />
+    <Compile Include="UpdateRules\Rules\20181215\RenameCrateActionNotification.cs" />
+    <Compile Include="UpdateRules\Rules\20181215\CloakRequiresConditionToPause.cs" />
+    <Compile Include="UpdateRules\Rules\20181215\MergeCaptureTraits.cs" />
+    <Compile Include="UpdateRules\Rules\20181215\RemovedNotifyBuildComplete.cs" />
+    <Compile Include="UpdateRules\Rules\20181215\ChangeTakeOffSoundAndLandingSound.cs" />
+    <Compile Include="UpdateRules\Rules\20181215\AddCarryableHarvester.cs" />
+    <Compile Include="UpdateRules\Rules\20181215\RequireProductionType.cs" />
     <Compile Include="UtilityCommands\CheckYaml.cs" />
     <Compile Include="UtilityCommands\ConvertPngToShpCommand.cs" />
     <Compile Include="UtilityCommands\ConvertSpriteToPngCommand.cs" />
@@ -940,19 +940,19 @@
     <Compile Include="UpdateRules\Rules\20180307\AddShakeToBridge.cs" />
     <Compile Include="UpdateRules\Rules\20180307\IgnoreAbstractActors.cs" />
     <Compile Include="UpdateRules\Rules\20180307\RemoveCanUndeployFromGrantConditionOnDeploy.cs" />
-    <Compile Include="UpdateRules\Rules\20180923\DefineNotificationDefaults.cs" />
-    <Compile Include="UpdateRules\Rules\20180923\RenameEditorTilesetFilter.cs" />
-    <Compile Include="UpdateRules\Rules\20180923\MergeRearmAndRepairAnimation.cs" />
-    <Compile Include="UpdateRules\Rules\20180923\LowPowerSlowdownToModifier.cs" />
-    <Compile Include="UpdateRules\Rules\20180923\RemoveHealthPercentageRing.cs" />
-    <Compile Include="UpdateRules\Rules\20180923\RemoveRepairBuildingsFromAircraft.cs" />
-    <Compile Include="UpdateRules\Rules\20180923\AddRearmable.cs" />
-    <Compile Include="UpdateRules\Rules\20180923\MergeAttackPlaneAndHeli.cs" />
-    <Compile Include="UpdateRules\Rules\20180923\ExtractHackyAIModules.cs" />
-    <Compile Include="UpdateRules\Rules\20180923\DefineLevelUpImageDefault.cs" />
-    <Compile Include="UpdateRules\Rules\20180923\RemovedAutoCarryallCircleTurnSpeed.cs" />
-    <Compile Include="UpdateRules\Rules\20180923\ReplacedWithChargeAnimation.cs" />
-    <Compile Include="UpdateRules\Rules\20180923\RefactorResourceLevelAnimating.cs" />
+    <Compile Include="UpdateRules\Rules\20181215\DefineNotificationDefaults.cs" />
+    <Compile Include="UpdateRules\Rules\20181215\RenameEditorTilesetFilter.cs" />
+    <Compile Include="UpdateRules\Rules\20181215\MergeRearmAndRepairAnimation.cs" />
+    <Compile Include="UpdateRules\Rules\20181215\LowPowerSlowdownToModifier.cs" />
+    <Compile Include="UpdateRules\Rules\20181215\RemoveHealthPercentageRing.cs" />
+    <Compile Include="UpdateRules\Rules\20181215\RemoveRepairBuildingsFromAircraft.cs" />
+    <Compile Include="UpdateRules\Rules\20181215\AddRearmable.cs" />
+    <Compile Include="UpdateRules\Rules\20181215\MergeAttackPlaneAndHeli.cs" />
+    <Compile Include="UpdateRules\Rules\20181215\ExtractHackyAIModules.cs" />
+    <Compile Include="UpdateRules\Rules\20181215\DefineLevelUpImageDefault.cs" />
+    <Compile Include="UpdateRules\Rules\20181215\RemovedAutoCarryallCircleTurnSpeed.cs" />
+    <Compile Include="UpdateRules\Rules\20181215\ReplacedWithChargeAnimation.cs" />
+    <Compile Include="UpdateRules\Rules\20181215\RefactorResourceLevelAnimating.cs" />
     <Compile Include="Traits\Player\PlayerResources.cs" />
     <Compile Include="UtilityCommands\DumpSequenceSheetsCommand.cs" />
     <Compile Include="Traits\Render\WithBuildingRepairDecoration.cs" />
diff --git a/OpenRA.Mods.Common/UpdateRules/Rules/20180923/AddCarryableHarvester.cs b/OpenRA.Mods.Common/UpdateRules/Rules/20181215/AddCarryableHarvester.cs
similarity index 100%
rename from OpenRA.Mods.Common/UpdateRules/Rules/20180923/AddCarryableHarvester.cs
rename to OpenRA.Mods.Common/UpdateRules/Rules/20181215/AddCarryableHarvester.cs
diff --git a/OpenRA.Mods.Common/UpdateRules/Rules/20180923/AddRearmable.cs b/OpenRA.Mods.Common/UpdateRules/Rules/20181215/AddRearmable.cs
similarity index 100%
rename from OpenRA.Mods.Common/UpdateRules/Rules/20180923/AddRearmable.cs
rename to OpenRA.Mods.Common/UpdateRules/Rules/20181215/AddRearmable.cs
diff --git a/OpenRA.Mods.Common/UpdateRules/Rules/20180923/ChangeTakeOffSoundAndLandingSound.cs b/OpenRA.Mods.Common/UpdateRules/Rules/20181215/ChangeTakeOffSoundAndLandingSound.cs
similarity index 100%
rename from OpenRA.Mods.Common/UpdateRules/Rules/20180923/ChangeTakeOffSoundAndLandingSound.cs
rename to OpenRA.Mods.Common/UpdateRules/Rules/20181215/ChangeTakeOffSoundAndLandingSound.cs
diff --git a/OpenRA.Mods.Common/UpdateRules/Rules/20180923/CloakRequiresConditionToPause.cs b/OpenRA.Mods.Common/UpdateRules/Rules/20181215/CloakRequiresConditionToPause.cs
similarity index 100%
rename from OpenRA.Mods.Common/UpdateRules/Rules/20180923/CloakRequiresConditionToPause.cs
rename to OpenRA.Mods.Common/UpdateRules/Rules/20181215/CloakRequiresConditionToPause.cs
diff --git a/OpenRA.Mods.Common/UpdateRules/Rules/20180923/DefineLevelUpImageDefault.cs b/OpenRA.Mods.Common/UpdateRules/Rules/20181215/DefineLevelUpImageDefault.cs
similarity index 100%
rename from OpenRA.Mods.Common/UpdateRules/Rules/20180923/DefineLevelUpImageDefault.cs
rename to OpenRA.Mods.Common/UpdateRules/Rules/20181215/DefineLevelUpImageDefault.cs
diff --git a/OpenRA.Mods.Common/UpdateRules/Rules/20180923/DefineNotificationDefaults.cs b/OpenRA.Mods.Common/UpdateRules/Rules/20181215/DefineNotificationDefaults.cs
similarity index 100%
rename from OpenRA.Mods.Common/UpdateRules/Rules/20180923/DefineNotificationDefaults.cs
rename to OpenRA.Mods.Common/UpdateRules/Rules/20181215/DefineNotificationDefaults.cs
diff --git a/OpenRA.Mods.Common/UpdateRules/Rules/20180923/ExtractHackyAIModules.cs b/OpenRA.Mods.Common/UpdateRules/Rules/20181215/ExtractHackyAIModules.cs
similarity index 100%
rename from OpenRA.Mods.Common/UpdateRules/Rules/20180923/ExtractHackyAIModules.cs
rename to OpenRA.Mods.Common/UpdateRules/Rules/20181215/ExtractHackyAIModules.cs
diff --git a/OpenRA.Mods.Common/UpdateRules/Rules/20180923/LowPowerSlowdownToModifier.cs b/OpenRA.Mods.Common/UpdateRules/Rules/20181215/LowPowerSlowdownToModifier.cs
similarity index 100%
rename from OpenRA.Mods.Common/UpdateRules/Rules/20180923/LowPowerSlowdownToModifier.cs
rename to OpenRA.Mods.Common/UpdateRules/Rules/20181215/LowPowerSlowdownToModifier.cs
diff --git a/OpenRA.Mods.Common/UpdateRules/Rules/20180923/MergeAttackPlaneAndHeli.cs b/OpenRA.Mods.Common/UpdateRules/Rules/20181215/MergeAttackPlaneAndHeli.cs
similarity index 100%
rename from OpenRA.Mods.Common/UpdateRules/Rules/20180923/MergeAttackPlaneAndHeli.cs
rename to OpenRA.Mods.Common/UpdateRules/Rules/20181215/MergeAttackPlaneAndHeli.cs
diff --git a/OpenRA.Mods.Common/UpdateRules/Rules/20180923/MergeCaptureTraits.cs b/OpenRA.Mods.Common/UpdateRules/Rules/20181215/MergeCaptureTraits.cs
similarity index 100%
rename from OpenRA.Mods.Common/UpdateRules/Rules/20180923/MergeCaptureTraits.cs
rename to OpenRA.Mods.Common/UpdateRules/Rules/20181215/MergeCaptureTraits.cs
diff --git a/OpenRA.Mods.Common/UpdateRules/Rules/20180923/MergeRearmAndRepairAnimation.cs b/OpenRA.Mods.Common/UpdateRules/Rules/20181215/MergeRearmAndRepairAnimation.cs
similarity index 100%
rename from OpenRA.Mods.Common/UpdateRules/Rules/20180923/MergeRearmAndRepairAnimation.cs
rename to OpenRA.Mods.Common/UpdateRules/Rules/20181215/MergeRearmAndRepairAnimation.cs
diff --git a/OpenRA.Mods.Common/UpdateRules/Rules/20180923/RefactorResourceLevelAnimating.cs b/OpenRA.Mods.Common/UpdateRules/Rules/20181215/RefactorResourceLevelAnimating.cs
similarity index 100%
rename from OpenRA.Mods.Common/UpdateRules/Rules/20180923/RefactorResourceLevelAnimating.cs
rename to OpenRA.Mods.Common/UpdateRules/Rules/20181215/RefactorResourceLevelAnimating.cs
diff --git a/OpenRA.Mods.Common/UpdateRules/Rules/20180923/RemoveAttackIgnoresVisibility.cs b/OpenRA.Mods.Common/UpdateRules/Rules/20181215/RemoveAttackIgnoresVisibility.cs
similarity index 100%
rename from OpenRA.Mods.Common/UpdateRules/Rules/20180923/RemoveAttackIgnoresVisibility.cs
rename to OpenRA.Mods.Common/UpdateRules/Rules/20181215/RemoveAttackIgnoresVisibility.cs
diff --git a/OpenRA.Mods.Common/UpdateRules/Rules/20180923/RemoveHealthPercentageRing.cs b/OpenRA.Mods.Common/UpdateRules/Rules/20181215/RemoveHealthPercentageRing.cs
similarity index 100%
rename from OpenRA.Mods.Common/UpdateRules/Rules/20180923/RemoveHealthPercentageRing.cs
rename to OpenRA.Mods.Common/UpdateRules/Rules/20181215/RemoveHealthPercentageRing.cs
diff --git a/OpenRA.Mods.Common/UpdateRules/Rules/20180923/RemoveNegativeDamageFullHealthCheck.cs b/OpenRA.Mods.Common/UpdateRules/Rules/20181215/RemoveNegativeDamageFullHealthCheck.cs
similarity index 100%
rename from OpenRA.Mods.Common/UpdateRules/Rules/20180923/RemoveNegativeDamageFullHealthCheck.cs
rename to OpenRA.Mods.Common/UpdateRules/Rules/20181215/RemoveNegativeDamageFullHealthCheck.cs
diff --git a/OpenRA.Mods.Common/UpdateRules/Rules/20180923/RemoveRepairBuildingsFromAircraft.cs b/OpenRA.Mods.Common/UpdateRules/Rules/20181215/RemoveRepairBuildingsFromAircraft.cs
similarity index 100%
rename from OpenRA.Mods.Common/UpdateRules/Rules/20180923/RemoveRepairBuildingsFromAircraft.cs
rename to OpenRA.Mods.Common/UpdateRules/Rules/20181215/RemoveRepairBuildingsFromAircraft.cs
diff --git a/OpenRA.Mods.Common/UpdateRules/Rules/20180923/RemoveResourceExplodeModifier.cs b/OpenRA.Mods.Common/UpdateRules/Rules/20181215/RemoveResourceExplodeModifier.cs
similarity index 100%
rename from OpenRA.Mods.Common/UpdateRules/Rules/20180923/RemoveResourceExplodeModifier.cs
rename to OpenRA.Mods.Common/UpdateRules/Rules/20181215/RemoveResourceExplodeModifier.cs
diff --git a/OpenRA.Mods.Common/UpdateRules/Rules/20180923/RemovedAutoCarryallCircleTurnSpeed.cs b/OpenRA.Mods.Common/UpdateRules/Rules/20181215/RemovedAutoCarryallCircleTurnSpeed.cs
similarity index 100%
rename from OpenRA.Mods.Common/UpdateRules/Rules/20180923/RemovedAutoCarryallCircleTurnSpeed.cs
rename to OpenRA.Mods.Common/UpdateRules/Rules/20181215/RemovedAutoCarryallCircleTurnSpeed.cs
diff --git a/OpenRA.Mods.Common/UpdateRules/Rules/20180923/RemovedDemolishLocking.cs b/OpenRA.Mods.Common/UpdateRules/Rules/20181215/RemovedDemolishLocking.cs
similarity index 100%
rename from OpenRA.Mods.Common/UpdateRules/Rules/20180923/RemovedDemolishLocking.cs
rename to OpenRA.Mods.Common/UpdateRules/Rules/20181215/RemovedDemolishLocking.cs
diff --git a/OpenRA.Mods.Common/UpdateRules/Rules/20180923/RemovedNotifyBuildComplete.cs b/OpenRA.Mods.Common/UpdateRules/Rules/20181215/RemovedNotifyBuildComplete.cs
similarity index 100%
rename from OpenRA.Mods.Common/UpdateRules/Rules/20180923/RemovedNotifyBuildComplete.cs
rename to OpenRA.Mods.Common/UpdateRules/Rules/20181215/RemovedNotifyBuildComplete.cs
diff --git a/OpenRA.Mods.Common/UpdateRules/Rules/20180923/RenameCrateActionNotification.cs b/OpenRA.Mods.Common/UpdateRules/Rules/20181215/RenameCrateActionNotification.cs
similarity index 100%
rename from OpenRA.Mods.Common/UpdateRules/Rules/20180923/RenameCrateActionNotification.cs
rename to OpenRA.Mods.Common/UpdateRules/Rules/20181215/RenameCrateActionNotification.cs
diff --git a/OpenRA.Mods.Common/UpdateRules/Rules/20180923/RenameEditorTilesetFilter.cs b/OpenRA.Mods.Common/UpdateRules/Rules/20181215/RenameEditorTilesetFilter.cs
similarity index 100%
rename from OpenRA.Mods.Common/UpdateRules/Rules/20180923/RenameEditorTilesetFilter.cs
rename to OpenRA.Mods.Common/UpdateRules/Rules/20181215/RenameEditorTilesetFilter.cs
diff --git a/OpenRA.Mods.Common/UpdateRules/Rules/20180923/ReplacedWithChargeAnimation.cs b/OpenRA.Mods.Common/UpdateRules/Rules/20181215/ReplacedWithChargeAnimation.cs
similarity index 100%
rename from OpenRA.Mods.Common/UpdateRules/Rules/20180923/ReplacedWithChargeAnimation.cs
rename to OpenRA.Mods.Common/UpdateRules/Rules/20181215/ReplacedWithChargeAnimation.cs
diff --git a/OpenRA.Mods.Common/UpdateRules/Rules/20180923/RequireProductionType.cs b/OpenRA.Mods.Common/UpdateRules/Rules/20181215/RequireProductionType.cs
similarity index 100%
rename from OpenRA.Mods.Common/UpdateRules/Rules/20180923/RequireProductionType.cs
rename to OpenRA.Mods.Common/UpdateRules/Rules/20181215/RequireProductionType.cs
diff --git a/OpenRA.Mods.Common/UpdateRules/UpdatePath.cs b/OpenRA.Mods.Common/UpdateRules/UpdatePath.cs
index fd69c0ebaf..743df2981c 100644
--- a/OpenRA.Mods.Common/UpdateRules/UpdatePath.cs
+++ b/OpenRA.Mods.Common/UpdateRules/UpdatePath.cs
@@ -62,7 +62,7 @@ namespace OpenRA.Mods.Common.UpdateRules
 
 			new UpdatePath("release-20180218", "release-20180307", new UpdateRule[0]),
 
-			new UpdatePath("release-20180307", "playtest-20180729", new UpdateRule[]
+			new UpdatePath("release-20180307", "release-20180923", new UpdateRule[]
 			{
 				new RemoveTerrainTypeIsWaterFlag(),
 				new DefineSquadExcludeHarvester(),
@@ -84,9 +84,9 @@ namespace OpenRA.Mods.Common.UpdateRules
 				new RemoveCanUndeployFromGrantConditionOnDeploy(),
 			}),
 
-			new UpdatePath("playtest-20180729", "release-20180923", new UpdateRule[0]),
+			new UpdatePath("release-20180923", "release-20181215", new UpdateRule[0]),
 
-			new UpdatePath("release-20180923", new UpdateRule[]
+			new UpdatePath("release-20181215", new UpdateRule[]
 			{
 				// Bleed only changes here
 				new AddCarryableHarvester(),