Program integrity basically means your files were transferred to different visa office. This is generally a good thing. Expect faster results.
As per CIC, Program integrity includes issues related to local knowledge, such as the ability to effectively evaluate documents: knowledge of local security and criminality environments; or familiarity with business practices and procedures.
Please see bulletin 180 - http://www.cic.gc.ca/english/resources/manuals/bulletins/2010/ob180.asp
