Bring your foreign licenses that you wish to convert and be prepared to answer some questions relative to your experience if Transport Canada wishes to see further proof of experience.
I would like to have my current ratings applied to my Canadian ATPL. How can I do this?
Provided that you have documented proof of training and successful completion of a Pilot Proficiency Check on the specific equipment within the last 12 months, Transport Canada will endorse your ATPL with the specific aircraft on it.
Once again, I caution you, this is not a “given”, you must bring documented proof!