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por S. el Sept. 10, 2007 · enlace permanente

Canada Post tracking number consistently forward you to Fedex. Unfortunately, CP has many forms for tracking numbers (depends on destination, origin, type of shipping etc.) Here is quick fix for 16 digits most commonly used for TN: open options/regex and edit regex for CP to something like that:
^\d{16}|(CA)$
While this is great extension, tuning to your needs will take some time and some basic knowledge of regex (quick reference at http://www.regular-expressions.info/reference.html)