However, if you feel the need, use import under the "brush" tab, it will transfer the brush but in it's new default texture.
But after you import it, the red builder brush stays the same, until you click on it and you see your new brush.
As a UT99 mapper-player you can use ut2004 to make better more accurate brushes, then export, then import to UT99.(might save you a killer BSP hole-collision prob).
I have not tried UT3 edit > UT99 edit yet, importing a brush, but UT04 works.
Also, was wondering (another thread?) but you think you could pull off a screenshot-map-comment-download-vote thing .
It would be sooo nice to have a place to rate maps again, AND comment, plus the moderators are present, unlike the last place.
It makes people want to make maps, then see it cleaned to the bone with neg or pos comments, fun.
(each editor worked no problems)
One other tidbit, Unreal, UT, UT04, UT3, and all zips and mods have "intalled" and worked fine for Intel i7-920 Win7 pro 64bit.