It should supplant the original review.

Or, you could write to administration and ask if they could remove it and kick it back to you for editing.

hello...i submitted a review, which was rejected, and so i added more to it to make it longer. what i did not do, though, was to proofread it well enough afterwards for accuracy. the review now reads as if there is was a problem with the provider, when in reality she was great. i would hate to give her a less than wonderful review.....is there any way to fix it??