I am working in Adobe Illustrator CS6 and InDesign CS6.
When I create a swatch using Pantone colour books (solid coated) and then convert the swatch to CMYK the values differ between programs and also differ to my hard copy of Pantone Colour Bridge.
I have followed the Workaround 1 on http://helpx.adobe.com/illustrator/kb/pantone-plus.html#main-pars_text _11 which was helpful - now the CMYK values produced in Illustrator and InDesign match HOWEVER they still differ from my hard copy of Pantone Colour Bridge.
I copied the leagacy files from CS4 - is it possible the CMYK values embedded in these files are out of date or is it possible that the CMYK values in the Colour Bridge book have since changed?