diff --git a/changelog.txt b/changelog.txt
index a187218..5ba0ab2 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -7,6 +7,7 @@ Version: 3.3.1
     - Fixed hive building cursor drifting
     - Fixed hive not updating build stats when upgraded
     - Fixed other modded enemy structures not be registered with Rampant
+    - Added check for downgraded mod versions on the same save with pre-3.2.0
 
 ---------------------------------------------------------------------------------------------------
 Version: 3.3.0
diff --git a/libs/Upgrade.lua b/libs/Upgrade.lua
index 3f74829..8896817 100644
--- a/libs/Upgrade.lua
+++ b/libs/Upgrade.lua
@@ -433,7 +433,7 @@ function Upgrade.setCommandForces(npcForces, enemyForces)
 end
 
 function Upgrade.addUniverseProperties()
-    if not global.universePropertyVersion then
+    if not global.universePropertyVersion or global.version then
         for key in pairs(global) do
             if key ~= "universe" then
                 global[key] = nil