Can I Enforce an Alberta Court Order if My Ex Moves to Another Province?

This answer covers the law of Alberta.

Often, yes, although it depends on which law made your order and where your ex now lives. An order about support, parenting time, decision-making responsibility or contact made under the Divorce Act has legal effect throughout Canada. It may be registered in any court in a province and enforced as that court's own order, or enforced in another way that province's laws allow, including reciprocal enforcement arrangements.

For support, the Maintenance Enforcement Program can facilitate payments if the payor or recipient lives outside Alberta, under the Interjurisdictional Support Orders Act. Its reciprocal registration agreements cover all Canadian provinces and territories, all American states and territories, and over 20 other countries. A payor living outside Alberta pays the enforcement program in their own jurisdiction, not the recipient directly.

To change an order or get file updates, you contact the enforcement program where you live. Registering an order elsewhere does not widen how it can be changed: a court may vary a Divorce Act order only in accordance with that Act. A lawyer can confirm which route fits your order.