FWIW, I've found the CEP/Audition clip restoration works best if applied to a range surrounding the clipped section that starts with the 0 centerline sample closest to the beginning of the clip, and ends with the 0 centerline sample closest to the end of the clip. For example:
_____
~ /CLIP1\ ~
/ \ / \ / \ + dB
/ \ / \ / \ / ____________ <--- 0 center line
\ / \ / \ /
\ / \ / ~ - dB
~ \_______/
CLIP2
===========================================
0....|...10....|...20....|...30....|...40.. <--- COUNTER / TIME (arbitrary units)
===========================================
So, for a slight clip, CLIP1, apply clip restoration to the range before and after the clip, starting and ending at the 0 center line. In this example, the range: 10 - 21. If, for example, you started your clip restoration range at 8 and ended at 19, it sometimes produces audible artifacts. More info on heavily clipped areas a little bit later...