H1B visa interview

Hi,

In 2007 Employer A sponsered H1B visa for me and it’s approved and got stamping.

In 2008 Employer B transfered my petition and again went for visa interview and got the stamping.

Due to project dealy i couldn’t travel at that time(My company didn’t get that project).

Now Employer C transfered my 2008 petition(Undaer CAP exemption) and it’s approved, now i am planning to go for interview.

My question

  1. VO will ask any questions about my previous visa stampings. (Previous visa’s i am not used).

is there any impact about my visa interview this time.