diff --git a/nnpdf_data/nnpdf_data/commondata/CMS_Z0J_8TEV/uncertainties_PT-Y_sys_10.yaml b/nnpdf_data/nnpdf_data/commondata/CMS_Z0J_8TEV/uncertainties_legacy_PT-Y_sys_10.yaml similarity index 100% rename from nnpdf_data/nnpdf_data/commondata/CMS_Z0J_8TEV/uncertainties_PT-Y_sys_10.yaml rename to nnpdf_data/nnpdf_data/commondata/CMS_Z0J_8TEV/uncertainties_legacy_PT-Y_sys_10.yaml diff --git a/nnpdf_data/nnpdf_data/commondata/CMS_Z0J_8TEV/uncertainties_PT-Y_sys_10_NNPDF31.yaml b/nnpdf_data/nnpdf_data/commondata/CMS_Z0J_8TEV/uncertainties_legacy_PT-Y_sys_10_NNPDF31.yaml similarity index 100% rename from nnpdf_data/nnpdf_data/commondata/CMS_Z0J_8TEV/uncertainties_PT-Y_sys_10_NNPDF31.yaml rename to nnpdf_data/nnpdf_data/commondata/CMS_Z0J_8TEV/uncertainties_legacy_PT-Y_sys_10_NNPDF31.yaml diff --git a/nnpdf_data/nnpdf_data/commondata/CMS_Z0J_8TEV/uncertainties_PT-Y_sys_NNPDF31.yaml b/nnpdf_data/nnpdf_data/commondata/CMS_Z0J_8TEV/uncertainties_legacy_PT-Y_sys_NNPDF31.yaml similarity index 100% rename from nnpdf_data/nnpdf_data/commondata/CMS_Z0J_8TEV/uncertainties_PT-Y_sys_NNPDF31.yaml rename to nnpdf_data/nnpdf_data/commondata/CMS_Z0J_8TEV/uncertainties_legacy_PT-Y_sys_NNPDF31.yaml