diff --git a/browser/components/sessionstore/TabState.sys.mjs b/browser/components/sessionstore/TabState.sys.mjs
index 8f7ed557e6aa61e7e16ed4a8d785ad5fe651b3d8..76f4cf5aef30cb580ef0295fe6928b5a6a362f4b 100644
--- a/browser/components/sessionstore/TabState.sys.mjs
+++ b/browser/components/sessionstore/TabState.sys.mjs
@@ -84,6 +84,18 @@ class _TabState {
       tabData.groupId = tab.group.id;
     }
 
+    tabData.zenWorkspace = tab.getAttribute("zen-workspace-id");
+    tabData.zenPinnedId = tab.getAttribute("zen-pin-id");
+    tabData.zenEssential = tab.getAttribute("zen-essential");
+    tabData.pinned = tabData.pinned || tabData.zenEssential;
+    tabData.zenDefaultUserContextId = tab.getAttribute("zenDefaultUserContextId");
+    tabData.zenPinnedEntry = tab.getAttribute("zen-pinned-entry");
+    tabData.zenPinnedIcon = tab.getAttribute("zen-pinned-icon");
+    tabData.zenIsEmpty = tab.hasAttribute("zen-empty-tab");
+    tabData.zenHasStaticLabel = tab.hasAttribute("zen-has-static-label");
+    tabData.zenGlanceId = tab.getAttribute("glance-id");
+    tabData.zenIsGlance = tab.hasAttribute("zen-glance-tab");
+
     tabData.searchMode = tab.ownerGlobal.gURLBar.getSearchMode(browser, true);
 
     tabData.userContextId = tab.userContextId || 0;