Way back when the software was written to redirect to the new post the "http://www.lcficmbs.com/ubb/ultimatebb.php?ubb=get_topic;f=1;t=016768" would have worked with the way the UBB Software was written however over the years the software changed in the Threads parsing if that's what you want to call it. When the software took your old files and made them into the MySQL Database equivalent it had taken them one forum at a time to each topic at a time like today’s layout. The difference is how ubbthreads.php has changed.

Old Way:
http://www.lcficmbs.com/ubb/ultimatebb.php?ubb=get_topic;f=1;t=016768

New Way:
http://www.lcficmbs.com/ubb/ubbthreads.php/topics/16768

Someone COULD sit down and update the redirect software that still programs in the Perl language that understands the changes in the new software and make it work but it really isn’t worth the time it takes to do the job.