So your old urls look like
http://example.com/thread-1234.html
or do they look like
http://example.com/thread-the-title-of-the-post-1234.html
or do they look like
http://example.com/thread-title-1234.html
So your old urls look like
http://example.com/thread-1234.html
or do they look like
http://example.com/thread-the-title-of-the-post-1234.html
or do they look like
http://example.com/thread-title-1234.html