diff --git a/CHANGELOG.md b/CHANGELOG.md
index ee540aaa..994793f7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,8 @@ Version 1.2.2
   Object prototype property in researchSync.
 - Fixed progress of a current infinite tech carrying over to the next one
   when researching it and another node completes it in researchSync.
+- Fixed progress of a previous infinite tech from another node being applied
+  to the current one in researchSync.
 
 
 Version 1.2.1
diff --git a/sharedPlugins/researchSync/index.js b/sharedPlugins/researchSync/index.js
index a2e7a840..17ee5c09 100644
--- a/sharedPlugins/researchSync/index.js
+++ b/sharedPlugins/researchSync/index.js
@@ -278,6 +278,12 @@ class ResearchSync {
 			}
             if (isNaN(cluster_techs[name].progress))
                 continue
+
+			// Do not update progress for infinite techs with a local level that's higher.
+			if (tech.infinite && tech.level > cluster_techs[name].level) {
+				continue;
+			}
+
             if (tech.progress < cluster_techs[name].progress)
                 result[name] = cluster_techs[name]
         }