When a topic is created in one forum (“Forum A”) and then moved to a different forum (“Forum B”), the subscription digest still lists the topic as coming from Forum A. The topic link in the digest also points to the old forum (Forum A).
When you click on the topic link, the systems internally redirects the user to the topic in the new forum area (Forum B).
Steps to recreate:
- Create a topic in Forum A
- Move the topic to Forum B
- Run the digest cron
