While important and timely, the recent effort to 'relaunch' migration systems as emergent entities is premised on a mischaracterization and subsequent dismissal of decades of research showing that systems are ultimately expressed in geographic structures in the form of migration networks comprised of a set of places that are connected to one another by migration flows. In this paper, we reconcile this relaunch with past research on migration systems by considering whether and how changes in some of the actors and dynamics that create and sustain migration systems are expressed in corresponding changes in the geographic structure of migration flows. By elucidating these linkages, our work helps to strengthen the aforementioned relaunch of migration systems by ensuring greater continuity with prior research and, going forward, the continued utility of a migration systems perspective for diverse audiences and issues.

中文翻译：

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将重新启动的移民系统重新定位为新兴实体，体现了地理结构

虽然重要且及时，但最近将移民系统作为紧急实体“重新启动”的努力的前提是对数十年的研究的错误描述和随后的驳回，这些研究表明系统最终以由一组地点组成的移民网络的形式在地理结构中表达它们通过移民流相互连接。在本文中，我们通过考虑创建和维持移民系统的某些参与者和动态的变化是否以及如何在移民流动的地理结构的相应变化中表达这一重新启动与过去对移民系统的研究。通过阐明这些联系，我们的工作有助于加强上述移民系统的重新启动，确保与先前研究的更大连续性，并在未来继续，