What is really checked during ip2? Do they check only criminality and security or do they verify all the documents submitted again (work experience, funds, etc)? Is it possible than an application is rejected at this stage after being a long time in ip1?
IP2 is a made up term in this forum. Everyone goea through a background and a security check. Background check is done by visa office processing application with cooperation of visa posts where your education and experience credentials are from - this task verifies your claims and authenticity of documents.
Security check is done by Canadian intelligence and security agencies, with or without cooperation of proper authorities in countries you lived/stayed in, and it is done completely independently from CIC - CIC only gets result, which will be positive or negative, without any explanation (as it is classified). This task looks deep into your life, activities and associations to find out if you are/were involved or are/were associated in any way with anyone who is/was involved in espionage, terrorism, organized crime, radical movements, crimes against humanity, war crimes, etc.