I am sure as our friend Wolverine has already helped and will let us know more details and add weight to the building evidence, i think Ottawa is issuing IP2 to approved files.
Also GCMS are corroborating IP1 etc. changes to actual CIC work done at those specific times that we were predicting.
As for your worry i just wanted to share something, from number of cases i am seeing and studying it seems that for Ottawa candidates IP2 is issued when all checks are passed by the Visa Officer as file is ready for approval or already approved. They are delaying PPRs to approved files, so I think there is nothing to worry about rejection at this stage for you

. But obviously our mind can never be sure till we get the PPR

.
The cases where IP2 is started when Visa officer looks at the file again to do final checks again, are at local visa offices, and here we have some cases of cruel rare rejections in IP2. So I think you will be fine my friend, take my word for it.