i got some new problems with silverstripe. actually the comment moderation section won't work. comments held for moderation do not appear after approving. on page refresh the comments appears again in comment moderation section and nothing happend.
Ahhh, no, I was using the icon with the speech bubble with a green tick along the row which contained the comment in the comments page 'awaiting moderation' section. The animation of the row disappearing worked but the comment never moved. Doing as you suggest works nicely, thanks for the tip.