This article discusses the theoretical and methodological arguments for the archivization of qualitative data in the social sciences, particularly sociology. These arguments are preceded by the presentation of selected research and documentary undertakings (including film) that consist in a return to specific persons and places (or data) after an interval of some years by the same researchers or their successors. Ethnographic revisits are a specific kind of such return. The author reviews and systematizes revisitations in the conviction that the theoretical tools and methodological approaches that have been worked out there—with the characteristic autoreflexiveness of contemporary anthropology—can be used at least in part in new qualitative analyses of sociological data in archives, including the Qualitative Data Archive of the Polish Academy of Sciences’ Institute of Philosophy and Sociology.