if the thread is from 2011/2012, there really isn't any point in reporting it, unless its still an active thread. If people are still posting in it as of late, then I suppose it can be moved, but if its burried on page 50,000 of the wrong section, its not really that imperative that it is moved, so it probably wont be moved.
If the thread is a few months old, check the activity, if no one has posted in the thread for months, the same thing applies. If it is still being posted in and not hidden by pages and pages of other threads, it can be moved.
I want to add one more thing, sometime some spammer post on 2-3 old months thread just for increase post counting, can we report that thread.
Yes, necroposting is against the rules, and those replies will be removed. Necro posting is when you post in a very old thread for no good particular reason.