I wasn't sure where best to put this for everyone to see, I thought this would be a good place to start.
If you have older posts with links from before the forum updated and you want to update those links without a whole bunch of legworking searching for the correct thread you had before, this shortcut should help you:
Note the Forum Number (1 in this example) and the thread number (001372 in this example)
When you edit a post to update a link, you can copy the following example (or copy the URL in your browser address bar) and make the following changes:
F= the forum nuber from above T= the thread number from above P= the page number of the thread if you want to link to something other than the beginning of the thread