you gotta be careful and follow some simple guidelines really..
Always select in grid mode, and always from the beginning off the bar.
Do not make a selection over a tempo change, that'll throw it out.
The best way ive found is to do it in sections of the beat, and do fills separately.
then it can be a case of trial and error with the different quantize settings and making sure you have no false triggers.
The best way to stop this is (well this is how i do it anyway. no idea how to use collection mode, still after all this time. terrible!).
Ah-hem
Have two edit groups. One for all the drums, and one for just the kick snare and toms.
When making a selection, use the shell edit group (i normally call it drum bd or just bd)
Select using drum bd. Then open up beat detective. (apple+8)
Seperate (i use 5-10 ms region pad)
Then turn on the all drums edit track select down.. using the shorcut, which off the top of my head is ; in key command focus.
Then switch to the conform tab on the beat detective window
work out what setting you'll need - its normally 1/4 or 1/8 for simple beats, and generally 1/16 for fills, but beware triplets!!
then hit conform..
Listen back (yes WITH the annoying gaps) and check that it all sounds good.
If not either undo and try a different quantize setting, or failing that check for false triggers and try again.
If it REALLY wont work, sometimes shifting the region manually earlier or later so its generally close to the grid can help too.
Then once you've done this through the whole song (Yes AGAIN!) duplicate the playlist as a backup.
Then open up beat detective again (apple+8)
Go to the edit smoothing tab
Choose Fill and crossfade and a time around 5-10 ms (sorry you gotta experiment)
Then choose fade.
Then while it does that Depending on the speed of your computer you should have enough time to Put the kettle on and have a cigarette (absolutely mandatory)
Now listen through the whole song again to make sure the fades havent caused any glitches by crossfadding in the wrong place..
Fix any dodgy fades..
When this is done...
Save as 'drum edit done'
highlight the drum regions from the end to the begining - the easiest way is to click the last one and press shift+enter
Then consolidate the regions ( Alt+shift+3)
you can stop there, but i would also do the following to keep the session size down, and to help Pro tools run smoothly....
Save the song as 'drum edited' or something
Then delete any unused playlists (you have these backed up in an earlier session)
Go to the region list on the right and click select unused after a heavy Bd session this can take a while, so dont panic if you get a beach ball of doom.
When you can see loads highlighted, click clear in the region list. then choose clear NOT delete
After this do a save session copy as and choose a path for the new cleared out session
Select copy all audio files and tick dont copy fade files
Voila nice tidy Tight drums, and a nice tidy session.
Hope that helps you all