diff --git a/lib/shared/dm-ops/delete-entry-spec.js b/lib/shared/dm-ops/delete-entry-spec.js
--- a/lib/shared/dm-ops/delete-entry-spec.js
+++ b/lib/shared/dm-ops/delete-entry-spec.js
@@ -1,5 +1,6 @@
 // @flow
 
+import invariant from 'invariant';
 import uuid from 'uuid';
 
 import type {
@@ -33,7 +34,11 @@
     const messageData = createMessageDataFromDMOperation(dmOperation);
     return { messageDatas: [messageData] };
   },
-  processDMOperation: async (dmOperation: DMDeleteEntryOperation) => {
+  processDMOperation: async (
+    dmOperation: DMDeleteEntryOperation,
+    viewerID: string,
+    utilities: ProcessDMOperationUtilities,
+  ) => {
     const {
       threadID,
       creatorID,
@@ -45,28 +50,36 @@
       messageID,
     } = dmOperation;
 
+    const rawEntryInfo = utilities.entryInfos[entryID];
     const messageData = createMessageDataFromDMOperation(dmOperation);
     const rawMessageInfos = [
       rawMessageInfoFromMessageData(messageData, messageID),
     ];
 
+    invariant(rawEntryInfo?.thick, 'Entry thread should be thick');
+    let rawEntryInfoToUpdate: ThickRawEntryInfo = rawEntryInfo;
     const date = dateFromString(dateString);
-    const rawEntryInfo: ThickRawEntryInfo = {
-      id: entryID,
-      threadID,
-      text: prevText,
-      year: date.getFullYear(),
-      month: date.getMonth() + 1,
-      day: date.getDate(),
-      creationTime,
-      creatorID,
-      thick: true,
-      deleted: true,
-      lastUpdatedTime,
-    };
+
+    const timestamp = rawEntryInfoToUpdate.lastUpdatedTime;
+
+    if (timestamp < lastUpdatedTime) {
+      rawEntryInfoToUpdate = {
+        id: entryID,
+        threadID,
+        text: prevText,
+        year: date.getFullYear(),
+        month: date.getMonth() + 1,
+        day: date.getDate(),
+        creationTime,
+        creatorID,
+        thick: true,
+        deleted: true,
+        lastUpdatedTime,
+      };
+    }
 
     const entryUpdateInfo: EntryUpdateInfo = {
-      entryInfo: rawEntryInfo,
+      entryInfo: rawEntryInfoToUpdate,
       type: updateTypes.UPDATE_ENTRY,
       id: uuid.v4(),
       time: lastUpdatedTime,