Rebuild Post Cache "problem"

[MRGTB]

I use a hack that displays a form box in threads with links in it, which for some reason disappears from the thread completly when you choose the option to "Rebuild Post Cache" in the admin CP.

Whats the problem? Does anybody have any idea why when I "Rebuild Post Cache", they are removed from the threads. From what I have read on other sites. I think some code needs to be added to the file called misc.php in the admincp directory. I think the two templates the hack uses needs to be listed in that php file so the content get cache