diff --git a/common/src/app/common/files/migrations.cljc b/common/src/app/common/files/migrations.cljc
index 28174ba84f..873aa1c3ab 100644
--- a/common/src/app/common/files/migrations.cljc
+++ b/common/src/app/common/files/migrations.cljc
@@ -1978,6 +1978,26 @@
         (update :pages-index d/update-vals update-container)
         (d/update-when :components d/update-vals update-container))))
 
+(defmethod migrate-data "0026-fix-svg-raw-shapes-uuids"
+  ;; Before the svg-raw schema declared :shapes as a vector of uuid,
+  ;; the JSON decoder had no type information for those child ids and
+  ;; left them as plain strings on any round trip, so they got
+  ;; persisted as strings. Once the schema was tightened, such files
+  ;; fail schema validation; this migration parses the strings back
+  ;; into uuid instances.
+  [data _]
+  (letfn [(update-object [object]
+            (cond-> object
+              (cfh/svg-raw-shape? object)
+              (d/update-when :shapes #(mapv uuid/coerce %))))
+
+          (update-container [container]
+            (d/update-when container :objects d/update-vals update-object))]
+
+    (-> data
+        (update :pages-index d/update-vals update-container)
+        (d/update-when :components d/update-vals update-container))))
+
 (def available-migrations
   (into (d/ordered-set)
         ["legacy-2"
@@ -2060,4 +2080,5 @@
          "0022-normalize-component-root-and-resync"
          "0023-repair-token-themes-with-inexistent-sets"
          "0024b-fix-stroke-cap-placement"
-         "0025-repair-empty-text-content"]))
+         "0025-repair-empty-text-content"
+         "0026-fix-svg-raw-shapes-uuids"]))
diff --git a/common/test/common_tests/files_migrations_0026_test.cljc b/common/test/common_tests/files_migrations_0026_test.cljc
new file mode 100644
index 0000000000..92dde088e8
--- /dev/null
+++ b/common/test/common_tests/files_migrations_0026_test.cljc
@@ -0,0 +1,110 @@
+;; This Source Code Form is subject to the terms of the Mozilla Public
+;; License, v. 2.0. If a copy of the MPL was not distributed with this
+;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
+;;
+;; Copyright (c) KALEIDOS INC Sucursal en España SL
+
+(ns common-tests.files-migrations-0026-test
+  (:require
+   [app.common.files.migrations :as cfm]
+   [app.common.uuid :as uuid]
+   [clojure.test :as t]))
+
+;; 0026-fix-svg-raw-shapes-uuids
+;; Before the svg-raw schema declared :shapes as a vector of uuid, the
+;; JSON decoder had no type information for those child ids and left
+;; them as plain strings on any round trip, so they got persisted as
+;; strings. Once the schema was tightened, such files fail schema
+;; validation; this migration parses the strings back into uuids.
+
+(defn- make-svg-raw-shape
+  "Build a minimal svg-raw shape with the supplied :shapes vector.
+  When `shapes` is nil the :shapes key is omitted, like a leaf svg-raw
+  shape."
+  [shape-id shapes]
+  (cond-> {:id shape-id
+           :type :svg-raw}
+    (some? shapes)
+    (assoc :shapes shapes)))
+
+(defn- make-other-shape
+  "Build a minimal non-svg-raw shape that must stay untouched."
+  [shape-id shapes]
+  {:id shape-id
+   :type :group
+   :shapes shapes})
+
+(t/deftest migration-0026-converts-svg-raw-shapes-strings-to-uuids-in-pages
+  (let [shape-id (uuid/next)
+        child-id (uuid/next)
+        page-id  (uuid/next)
+        data     {:pages-index
+                  {page-id
+                   {:objects
+                    {shape-id (make-svg-raw-shape
+                               shape-id
+                               [(str child-id)
+                                "1c2986ce-4a0f-8001-8007-1fb8f3b5ab31"])}}}}
+        data'    (cfm/migrate-data data "0026-fix-svg-raw-shapes-uuids")
+        shape    (get-in data' [:pages-index page-id :objects shape-id])]
+
+    (t/is (= 2 (count (:shapes shape))) "child ids preserved")
+    (t/is (= child-id (first (:shapes shape))) "existing uuid string parsed to uuid")
+    (t/is (= #uuid "1c2986ce-4a0f-8001-8007-1fb8f3b5ab31" (second (:shapes shape)))
+          "foreign uuid string parsed to uuid")
+    (t/is (every? uuid? (:shapes shape)) "all child ids are uuids")))
+
+(t/deftest migration-0026-converts-svg-raw-shapes-strings-to-uuids-in-components
+  (let [shape-id (uuid/next)
+        child-id (uuid/next)
+        component-id (uuid/next)
+        data     {:components
+                  {component-id
+                   {:objects
+                    {shape-id (make-svg-raw-shape
+                               shape-id
+                               [(str child-id)
+                                "1c2986ce-4a0f-8001-8007-1fb92196e65f"])}}}}
+        data'    (cfm/migrate-data data "0026-fix-svg-raw-shapes-uuids")
+        shape    (get-in data' [:components component-id :objects shape-id])]
+
+    (t/is (= 2 (count (:shapes shape))) "child ids preserved")
+    (t/is (= child-id (first (:shapes shape))) "existing uuid string parsed to uuid")
+    (t/is (= #uuid "1c2986ce-4a0f-8001-8007-1fb92196e65f" (second (:shapes shape)))
+          "foreign uuid string parsed to uuid")
+    (t/is (every? uuid? (:shapes shape)) "all child ids are uuids")))
+
+(t/deftest migration-0026-leaves-uuids-and-other-shapes-untouched
+  (let [svg-raw-id (uuid/next)
+        child-id   (uuid/next)
+        group-id   (uuid/next)
+        leaf-id    (uuid/next)
+        page-id    (uuid/next)
+        data       {:pages-index
+                    {page-id
+                     {:objects
+                      {svg-raw-id (make-svg-raw-shape svg-raw-id [child-id])
+                       group-id   (make-other-shape group-id [(str child-id)])
+                       leaf-id    (make-svg-raw-shape leaf-id nil)}}}}
+        data'      (cfm/migrate-data data "0026-fix-svg-raw-shapes-uuids")
+        objects    (get-in data' [:pages-index page-id :objects])]
+
+    (t/is (= [child-id] (:shapes (get objects svg-raw-id)))
+          "already-uuid svg-raw children untouched")
+    (t/is (= [(str child-id)] (:shapes (get objects group-id)))
+          "non-svg-raw shapes untouched")
+    (t/is (nil? (:shapes (get objects leaf-id)))
+          "svg-raw leaf without :shapes untouched")))
+
+(t/deftest migration-0026-is-idempotent
+  (let [shape-id (uuid/next)
+        child-id (uuid/next)
+        page-id  (uuid/next)
+        data     {:pages-index
+                  {page-id
+                   {:objects
+                    {shape-id (make-svg-raw-shape shape-id [(str child-id)])}}}}
+        data'    (cfm/migrate-data data "0026-fix-svg-raw-shapes-uuids")
+        data''   (cfm/migrate-data data' "0026-fix-svg-raw-shapes-uuids")]
+
+    (t/is (= data' data'') "second run is a no-op")))
\ No newline at end of file
diff --git a/common/test/common_tests/runner.cljc b/common/test/common_tests/runner.cljc
index b24b045e1a..cc08609837 100644
--- a/common/test/common_tests/runner.cljc
+++ b/common/test/common_tests/runner.cljc
@@ -19,6 +19,7 @@
    [common-tests.files-builder-test]
    [common-tests.files-changes-test]
    [common-tests.files-migrations-0025-test]
+   [common-tests.files-migrations-0026-test]
    [common-tests.files-migrations-test]
    [common-tests.files.shapes-builder-test]
    [common-tests.files.validate-test]
@@ -97,6 +98,7 @@
    'common-tests.files-changes-test
    'common-tests.files-builder-test
    'common-tests.files-migrations-0025-test
+   'common-tests.files-migrations-0026-test
    'common-tests.files-migrations-test
    'common-tests.files.validate-test
    'common-tests.geom-align-test