diff --git a/js/app.js b/js/app.js
index af4d72e..1f17eb2 100644
--- a/js/app.js
+++ b/js/app.js
@@ -217,14 +217,40 @@ const TimeTrack = {
         importData() {
             let json = JSON.parse(this.inputs.importJson);
 
-            this.tickets = json.tickets;
-            this.archive = json.archive;
-            this.ticketSystemUrl = json.ticketSystemUrl;
+            if (json.trackedTickets) {
+                this.tickets = this.extractTicketsFromLegacyJson(json.trackedTickets);
+                this.archived = this.extractArchivedTicketsFromLegacyJson(json.trackedTickets);
+            } else {
+                this.tickets = json.tickets;
+                this.archive = json.archive ?? [];
+            }
+            
+            this.ticketSystemUrl = json.redmineUrl ?? json.ticketSystemUrl;
             this.showPT = json.showPT;
             this.theme = json.theme;
             this.updateStorage();
             location.reload();
         },
+        extractTicketsFromLegacyJson(tickets) {
+            return this.extractTickets(tickets);
+        },
+        extractArchivedTicketsFromLegacyJson(tickets) {
+            return this.extractTickets(tickets, true);
+        },
+        extractTickets(ticketCollection, forArchive = false) {
+            let tickets = [];
+            let archive = [];
+            
+            ticketCollection.forEach((ticket) => {
+                if (ticket.archived || (ticket.active && ticket.active === false)) {
+                    archive.push(ticket);
+                } else {
+                    tickets.push(ticket)
+                }
+            });
+            
+            return forArchive ? archive : tickets;
+        },
         copy2Clipboard() {
             let copyText = document.getElementById("exportJsonInput");