US Embassy Nepal website also has some thing similar posted.
But it does not say that we will be able to verify it before the interview.

http://nepal.usembassy.gov/tr-2010-05-28.html

236. Subhone: I came to US on F1 visa
and after finishing my masters I started working in OPT. My employer
filed my H1B and I am currently working on H1b Visa. I am not sure if
the PIMS database was updated with my info when they applied for H1B. I
believe updating PIMS before I come to Nepal for visa stamping would
expediate the process. Please let me know about the process of updating
PIMS from US before coming to Nepal. Thank you

The PIMS database
for H1B employment is automatically updated, once the Department of
Homeland Security completes its processing of the petition. If the PIMS
report has not yet come through, your case will be put on hold until it
does. Usually, this does not take too long, just a matter of days.