diff --git a/whelktool/scripts/cleanups/2023/06/lxl-4217-move-bad-identifiedby.groovy b/whelktool/scripts/cleanups/2023/06/lxl-4217-move-bad-identifiedby.groovy
new file mode 100644
index 0000000000..4e35059061
--- /dev/null
+++ b/whelktool/scripts/cleanups/2023/06/lxl-4217-move-bad-identifiedby.groovy
@@ -0,0 +1,31 @@
+String where = "collection = 'bib' and data#>>'{@graph,1,identifiedBy}' like '%talbok_text%'"
+
+selectBySqlWhere(where) { data ->
+    boolean changed = false
+    List identifiedBys = asList(data.graph[1].identifiedBy)
+
+    changed = identifiedBys.removeAll { it.value == "talbok_text" }
+
+    if (changed) {
+        identifiedBys.each { identifiedBy ->
+            if (identifiedBy.typeNote == "MTM medienummer") {
+                if (identifiedBy.qualifier == null) {
+                    identifiedBy.qualifier = ["talbok_text"]
+                } else if (identifiedBy.typeNote instanceof List) {
+                    identifiedBy.qualifier.add("talbok_text")
+                }
+            }
+        }
+
+        //System.err.println("Changed identifiedBy to: " + data.graph[1].identifiedBy)
+        data.scheduleSave()
+    }
+}
+
+private List asList(Object o) {
+    if (o == null)
+        return []
+    if (o instanceof List)
+        return o
+    return [o]
+}