diff --git a/package/czechlight-cfg-fs/migrations/0001_initial-data.sh b/package/czechlight-cfg-fs/migrations/0001_initial-data.sh
new file mode 100644
index 0000000..8b81ccb
--- /dev/null
+++ b/package/czechlight-cfg-fs/migrations/0001_initial-data.sh
@@ -0,0 +1,30 @@
+#!/bin/bash
+
+# Load initial data
+# -----------------
+# These data are imported into the sysrepo's startup datastore only once. This happens either when the box is restored to
+# its factory settings (the box is new and boots for the first time or someone deletes the startup.json backup in /cfg)
+# or when the box is upgraded from the state before the migrations were introduced (versions released before July 2022).
+#
+# It's OK for user to remove these settings from sysrepo startup DS.
+# However, the data will NEVER get restored by us (unless somebody deletes /cfg/startup.json, see above).
+
+case "${CZECHLIGHT}" in
+    sdn-roadm-line*)
+        sysrepocfg --datastore=startup --format=json --module=czechlight-roadm-device --import="${CLA_YANG}/sdn-roadm-line.json"
+        ;;
+    sdn-roadm-add-drop*)
+        ;& # fallthrough
+    sdn-roadm-hires-add-drop*)
+        sysrepocfg --datastore=startup --format=json --module=czechlight-roadm-device --import="${CLA_YANG}/sdn-roadm-add-drop.json"
+        ;;
+    sdn-roadm-coherent-a-d*)
+        sysrepocfg --datastore=startup --format=json --module=czechlight-coherent-add-drop --import="${CLA_YANG}/sdn-roadm-coherent-a-d.json"
+        ;;
+    sdn-inline*)
+        sysrepocfg --datastore=startup --format=json --module=czechlight-inline-amp --import="${CLA_YANG}/sdn-inline.json"
+        ;;
+    calibration-box)
+        sysrepocfg --datastore=startup --format=json --module=czechlight-calibration-device --import="${CLA_YANG}/calibration-box.json"
+        ;;
+esac