I opened a RAW image in Adobe Camera Raw, did some cropping and colour adjustments, and then opened it in Photoshop to work on it further.

When i returned to Bridge, I realised that the original RAW image had little icons on it with crop and adjustment symbol! The original had been changed and now I don't have the untouched raw file anymore.

What am I doing wrong? I thought edits in Camera Raw would not affect the original RAW file. Do i need to make some setting changes?