I played a ton of this game around the time it came out, and for a few years afterwards, and played through the campaigns a couple times, along with a ton of fan campaigns. However: I'm not sure of, or have maybe just forgotten, the specifics, but I know that there was a bonus campaign/mission in the original game, featuring Boba Fett and some other characters I forget. I do not know how it was originally unlocked (preorder? ordering it from a specific outlet? limited-time download? registering it?). Unfortunately, I never found any of this out, and never got to play this mission.

All the sound files for the mission (that is, basically, the voice acting) were still present in the game's files, but the actual maps and scripts were not.

What I want to know is: does this rerelease of the game include this mission? And, if not, why not?

You need more rep. ;)

Anyway, thanks to you I also found it, although currently only available via archive.org - https://web.archive.org/web/*/http://www.freewebs.com/lord_vader/Clone%20Campagins%20Bonus%20Mission.ZIP

original link here - http://swgb.heavengames.com/cgi-bin/forums/display.cgi?action=ct&f=1,3159,,all

Bummer, none of those links are working. Says the sites are frozen.

Not even my first link? You need to click on blue circle (20th August). ;)

DUH! XD
Thank you so much.

The Prima guide apparently has a short story in it about the Imperial invasion of Kashyyyk. Mahwi Lihnn apparently only appears outside the game in the novel Darth Maul: Shadow Hunter, so maybe you're remembering an extract of that novel that was maybe published in something SWGB-related?

As for the design contest missions- I vaguely remember playing them, I think, like I don't think they were part of the preorder thing, or at least it was possible to download them elsewhere without having preordered the game.

Anyway, I guess this thread is solved in that now I know what the preorder mission is, but it leaves hanging the question of why this mission (and possibly the others) aren't included with this version of the game; it's been over a decade, I don't think anyone who preordered the game will feel miffed at everyone getting the preorder bonus now.

For the record, the contest missions were named Harkov's Defection, Ewok Adventure, Escape from Hoth, and Escape from Bespin. Can probably dig them up somewhere with some searching. Turns out those were included with the Clone Campaigns expansion, and not the pre-order thing.

Sorry for the necro, but started to play this game again and I just diggin' in the fromus. Anyway, yes I remember those "bonus missions". Around 2002-2003 those can be downloaded from the LucasArts (RIP) site, like the patch. You need to copy the files in the camapaign directory, if I recall. Hm, maybe with Internet Archive I can dig up those files.
And I managed to find them. I post the link, if it not work I can upload somewhere.

https://web.archive.org/web/20031211180918/http://www.lucasarts.com/products/battlegrounds/downloads.htm