Everything went well with the advanced MOD. No errors or problems. However, the SEO MOD doesn't work correctly with "Recent topics", "last post on index" and others, will display a different version of the same URL.
For example, forum/new-coins-t2592.html will be displayed as forum/topic2592.html which will cause a duplicate content SEO issue. How do I fix this?
By the way, I also noticed this issue on someone else board who has the SEO MOD installed.
This explains: [Advanced] Zero Duplicate V 0.2.2. The zero duplicate code redirects non-canonical URLs like postNNN and topicNNN to the canonical equivalent (e.g., my-cool-discussion-t1234.html). Since bots follow 301 redirects, there's no duplicate entries in their index. The non-canonical URLs are shown in stuff like search results because it isn't worth the extra time to rewrite transitory URL results.