diff --git a/MVMCoreUI/Behaviors/ReplaceableMoleculeBehaviorModel.swift b/MVMCoreUI/Behaviors/ReplaceableMoleculeBehaviorModel.swift
index 9cbf85ed..8b624a7b 100644
--- a/MVMCoreUI/Behaviors/ReplaceableMoleculeBehaviorModel.swift
+++ b/MVMCoreUI/Behaviors/ReplaceableMoleculeBehaviorModel.swift
@@ -20,7 +20,7 @@ public class ReplaceableMoleculeBehaviorModel: PageBehaviorModelProtocol {
     }
 }
 
-public class ReplaceableMoleculeBehavior: PageMoleculeTransformationBehavior, CoreLogging {
+public class ReplaceableMoleculeBehavior: PageMoleculeTransformationBehavior, PageVisibilityBehavior, CoreLogging {
     
     public var loggingPrefix: String {
         "\(self) \(ObjectIdentifier(self).hashValue) \(moleculeIds.prefix(3)) \(moleculeIds.count > 3 ? "+ \(moleculeIds.count - 3) more" : ""):\n"
@@ -30,6 +30,8 @@ public class ReplaceableMoleculeBehavior: PageMoleculeTransformationBehavior, Co
         String(describing: Self.self)
     }
     
+    var hasPreviouslyBeenShown = false
+    var previouslyReplacedIds = Set<String>()
     var moleculeIds: [String]
     public var modulesToListenFor: [String]
     private var observingForResponses: NSObjectProtocol?
@@ -75,7 +77,7 @@ public class ReplaceableMoleculeBehavior: PageMoleculeTransformationBehavior, Co
                     return rootMolecule
                 }
                 debugLog("top replacing \(rootMolecule) with \(updatedMolecule)")
-                logUpdated(molecule: updatedMolecule)
+                logUpdated(moleculeId: updatedMolecule.id)
                 changeList.append(updatedMolecule)
                 return updatedMolecule
             }
@@ -92,7 +94,7 @@ public class ReplaceableMoleculeBehavior: PageMoleculeTransformationBehavior, Co
                             return
                         }
                         debugLog("deep replacing \(replacedMolecule) with \(newMolecule)")
-                        logUpdated(molecule: newMolecule)
+                        logUpdated(moleculeId: newMolecule.id)
                         changeList.append(newMolecule)
                     }
                 } catch {
@@ -111,15 +113,28 @@ public class ReplaceableMoleculeBehavior: PageMoleculeTransformationBehavior, Co
         return hasReplacement ? updatedRootMolecules : nil
     }
     
-    private func logUpdated(molecule: MoleculeModelProtocol) {
-        guard let module: [AnyHashable: Any] = delegateObject?.moleculeDelegate?.getModuleWithName(molecule.id),
+    private func logUpdated(moleculeId: String) {
+        guard let module: [AnyHashable: Any] = delegateObject?.moleculeDelegate?.getModuleWithName(moleculeId),
               let viewController = delegateObject?.moleculeDelegate as? MVMCoreViewControllerProtocol else {
-            debugLog("Missing the originating module \(molecule.id) creating this molecule!")
+            debugLog("Missing the originating module \(moleculeId) creating this molecule!")
             return
         }
+        previouslyReplacedIds.insert(moleculeId)
         MVMCoreUILoggingHandler.shared()?.defaultLogPageUpdate(forController: viewController, from: module)
     }
     
+    public func onPageShown(_ delegateObject: MVMCoreUIDelegateObject?) {
+        guard hasPreviouslyBeenShown else {
+            // Skip first replacement build handled in onPageNew. (Pulled and reported from cache.)
+            hasPreviouslyBeenShown = true
+            return
+        }
+        debugLog("Page reshown. Resend replaced molecule analytics for: \(previouslyReplacedIds)")
+        previouslyReplacedIds.forEach { id in
+            logUpdated(moleculeId: id)
+        }
+    }
+    
     deinit {
         debugLog("deinit")
     }