I added a couple of buttons to move a thread to two different pre-defined forums on my site. You can't do it with a link, you need to use a form.
Page source:
Code:
<form action="postings.php?do=domovethread&t=xxxxxx" method="post" name="xxxxxx" >
<input type="hidden" name="s" value="" />
<input type="hidden" name="securitytoken" value="xxxxxx" />
<input type="hidden" name="t" value="xxxxxx" />
<input type="hidden" name="do" value="domovethread" />
<input type="hidden" name="title" value="xxxxxx" />
<input type="hidden" name="redirect" value="xxxxxx" />
<input type="hidden" name="redirecttitle" value="xxxxxx" />
<input type="hidden" name="destforumid" value="xxxxxx" />
<input type="submit" class="button" value="xxxxxx" />
</form>
Just replace the stuff in red with the correct variables and it should work.