diff --git a/nnpdf_data/nnpdf_data/commondata/CMS_SINGLETOP_13TEV/metadata.yaml b/nnpdf_data/nnpdf_data/commondata/CMS_SINGLETOP_13TEV/metadata.yaml
index ad1642563c..5a24041234 100644
--- a/nnpdf_data/nnpdf_data/commondata/CMS_SINGLETOP_13TEV/metadata.yaml
+++ b/nnpdf_data/nnpdf_data/commondata/CMS_SINGLETOP_13TEV/metadata.yaml
@@ -56,5 +56,6 @@ implemented_observables:
     legacy:
       data_uncertainties:
         - uncertainties_legacy_TCHANNEL-XSEC.yaml
+      data_central: data_legacy_TCHANNEL-XSEC.yaml
   data_central: data_TCHANNEL-XSEC.yaml
   ported_from: CMS_SINGLETOP_TCH_R_13TEV
diff --git a/nnpdf_data/nnpdf_data/commondata/CMS_SINGLETOP_7TEV/metadata.yaml b/nnpdf_data/nnpdf_data/commondata/CMS_SINGLETOP_7TEV/metadata.yaml
index 2e83cce69f..3bfa35ef87 100644
--- a/nnpdf_data/nnpdf_data/commondata/CMS_SINGLETOP_7TEV/metadata.yaml
+++ b/nnpdf_data/nnpdf_data/commondata/CMS_SINGLETOP_7TEV/metadata.yaml
@@ -56,5 +56,6 @@ implemented_observables:
     legacy:
       data_uncertainties:
         - uncertainties_legacy_TCHANNEL-XSEC.yaml
+      data_central: data_legacy_TCHANNEL-XSEC.yaml
   data_central: data_TCHANNEL-XSEC.yaml
   ported_from: CMS_SINGLETOP_TCH_TOT_7TEV
diff --git a/nnpdf_data/nnpdf_data/commondata/CMS_SINGLETOP_8TEV/metadata.yaml b/nnpdf_data/nnpdf_data/commondata/CMS_SINGLETOP_8TEV/metadata.yaml
index 7d00962a18..583d795105 100644
--- a/nnpdf_data/nnpdf_data/commondata/CMS_SINGLETOP_8TEV/metadata.yaml
+++ b/nnpdf_data/nnpdf_data/commondata/CMS_SINGLETOP_8TEV/metadata.yaml
@@ -56,5 +56,6 @@ implemented_observables:
     legacy:
       data_uncertainties:
       - uncertainties_legacy_TCHANNEL-XSEC.yaml
+      data_central: data_legacy_TCHANNEL-XSEC.yaml
   data_central: data_TCHANNEL-XSEC.yaml
   ported_from: CMS_SINGLETOP_TCH_R_8TEV
diff --git a/nnpdf_data/nnpdf_data/commondata/CMS_SINGLETOP_8TEV/validation/vp/runcard.yaml b/nnpdf_data/nnpdf_data/commondata/CMS_SINGLETOP_8TEV/validation/vp/runcard.yaml
new file mode 100644
index 0000000000..1a7479dae9
--- /dev/null
+++ b/nnpdf_data/nnpdf_data/commondata/CMS_SINGLETOP_8TEV/validation/vp/runcard.yaml
@@ -0,0 +1,33 @@
+meta:
+   author: Jaco ter Hoeve
+   keywords: [single top, kinematic_coverage, new commondata]
+   title: Legacy vs new commondata for CMS single top 7 TeV
+
+theoryid: 200
+use_cuts: internal
+
+dataset_inputs:
+- { dataset: CMS_SINGLETOP_7TEV_TCHANNEL-XSEC, variant: legacy}
+- { dataset: CMS_SINGLETOP_7TEV_TCHANNEL-XSEC}
+
+template_text: |
+  Kinematic coverage
+  ------------------
+  {@plot_xq2@}
+  
+  Data theory comparison
+  ----------------------
+  {@ dataset_inputs plot_fancy @}
+  {@ dataset_inputs::pdfs plot_fancy(normalize_to=data)@}
+  {@ with pdfs  @}
+  {@ experiments_chi2_table @}
+  {@ endwith@}
+
+actions_:
+  - report(main=True)
+
+pdfs:
+    - id: NNPDF40_nnlo_as_01180
+      label: NNPDF40_nnlo_as_01180
+
+