I interviewed with Cab Gemini not too long ago. HR has since been calling me time and again asking "how much did you make in 2007?" I told that I was in Hongkong that year and hence earned in HKD. They want to know the equivalent SGD and the medical benetis I enjoied in HK. Next they want to know if my employer then paid the relocation expenses from Singapore to Hongkong, and which airlines I used. I wonder how this questions can be relevant today. What to say?

Are these questions common in KPMG/PWC/EY/Accenture as well?