Converting JAA Frozen ATPL to Canadian Licence.
Flyinuphi,
With 250 hours you will be working on gaining a Canadian CPL which will require you to obtain a Class I medical and sit a single exam for the commercial and another for the instrument rating. You will also have to undergo a CPL flight Test and a Multi-IFR flight test. The SAMRA and SAMRON you can sit at 750 hours once you are half way to the 1500hr requirement for an ATPL. No such thing as a Frozen ATPL in Canada or the US.
Hope that helps.