Yes, we haven't had any problems on the stamping. Amendment is necessary when there is significant change as in Job Title, or Duties or Salary, but just for the location change it is not necessary.
http://www.nationofimmigrators.com/INS%20Memorandum%20T%20Aleinikoff%20Amended%20H-1B%20Petitions.pdf

Thanks for sharing the link, will have to dig deeper on this.