diff --git a/view-train.js b/view-train.js
index 28fcd32..825577a 100755
--- a/view-train.js
+++ b/view-train.js
@@ -343,7 +343,12 @@ function rsk() {
 
 window.addEventListener('popstate', function (e) {
 	groupIndex = null
-	refresh()
+	if (trainData) {
+		onTrainData(trainData)
+	}
+	else {
+		refresh()
+	}
 })
 
 window.addEventListener('load', function (e) {