Is there a utility to extract in batch mode the exif and Adobe Camera Raw information from a JPEG converted with ACR and create a .xmp file? I have lots of JPEG files from different cameras converted with different versions of ACR and would like to be able to open the RAW files with the settings used for conversion.

BTW, I noticed that earlier versions of ACR JPEGs incorporated the ACR parameters (colour temperature, tint, contrast, saturation etc.) in the EXIF, but JPEGs generated with ACR of CS2 do not contain this information in the EXIF.
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Steve