This one is now written up and published as 'Archaeology and Migration: rethinking the debate', in The Very Beginning of Europe? Cultural and Social Dimensions of Early-Medieval Migration and Colonisation (5th-8th Century), ed. R. Annaert, K. de Groote, Y. Hollevoet, F. Theuws, D. Tys and L. Verslype (Relicta Monografien 7. Brussels, Flanders Heritage Agency, 2012), pp.29-40.
This post now is footnoted, written up and published as ‘From Roman fundus to Carolingian Grand Domaine: crucial ruptures between late antiquity and the middle ages.’ Revue Belge de Philologie at d’Histoire 90 (2012), pp.273-98 (the articles on this issue’s theme were also published, with the same pagination, as a separate volume: Autour de Yoshiki Morimoto. Les structures agricoles en dehors du monde Carolingien: formes et genèse, ed. J-P. Devroey & A. Wilkin, (Timperman: Brussels, 2012): ISBN 9-789461-360243).
In addition, as noted some time ago you can read the written up version of the original of this post as ‘Ethnicity and early medieval cemeteries.’ Arqueología y Territorio Medieval 18 (2011), pp.15-27.