diff --git a/src/plugins/dashboard/server/saved_objects/dashboard_migrations.test.ts b/src/plugins/dashboard/server/saved_objects/dashboard_migrations.test.ts
index e7f84ad1fe518..9829498118cc0 100644
--- a/src/plugins/dashboard/server/saved_objects/dashboard_migrations.test.ts
+++ b/src/plugins/dashboard/server/saved_objects/dashboard_migrations.test.ts
@@ -17,6 +17,7 @@
  * under the License.
  */
 
+import { SavedObjectUnsanitizedDoc } from 'kibana/server';
 import { dashboardSavedObjectTypeMigrations as migrations } from './dashboard_migrations';
 
 describe('dashboard', () => {
@@ -24,7 +25,7 @@ describe('dashboard', () => {
     const migration = migrations['7.0.0'];
 
     test('skips error on empty object', () => {
-      expect(migration({})).toMatchInlineSnapshot(`
+      expect(migration({} as SavedObjectUnsanitizedDoc)).toMatchInlineSnapshot(`
 Object {
   "references": Array [],
 }
@@ -329,7 +330,7 @@ Object {
         attributes: {
           panelsJSON: 123,
         },
-      };
+      } as SavedObjectUnsanitizedDoc;
       expect(migration(doc)).toMatchInlineSnapshot(`
 Object {
   "attributes": Object {
@@ -347,7 +348,7 @@ Object {
         attributes: {
           panelsJSON: '{123abc}',
         },
-      };
+      } as SavedObjectUnsanitizedDoc;
       expect(migration(doc)).toMatchInlineSnapshot(`
 Object {
   "attributes": Object {
@@ -365,7 +366,7 @@ Object {
         attributes: {
           panelsJSON: '{}',
         },
-      };
+      } as SavedObjectUnsanitizedDoc;
       expect(migration(doc)).toMatchInlineSnapshot(`
 Object {
   "attributes": Object {
@@ -383,7 +384,7 @@ Object {
         attributes: {
           panelsJSON: '[{"id":"123"}]',
         },
-      };
+      } as SavedObjectUnsanitizedDoc;
       expect(migration(doc)).toMatchInlineSnapshot(`
 Object {
   "attributes": Object {
@@ -401,7 +402,7 @@ Object {
         attributes: {
           panelsJSON: '[{"type":"visualization"}]',
         },
-      };
+      } as SavedObjectUnsanitizedDoc;
       expect(migration(doc)).toMatchInlineSnapshot(`
 Object {
   "attributes": Object {
@@ -420,7 +421,7 @@ Object {
           panelsJSON:
             '[{"id":"1","type":"visualization","foo":true},{"id":"2","type":"visualization","bar":true}]',
         },
-      };
+      } as SavedObjectUnsanitizedDoc;
       const migratedDoc = migration(doc);
       expect(migratedDoc).toMatchInlineSnapshot(`
 Object {
diff --git a/src/plugins/dashboard/server/saved_objects/dashboard_migrations.ts b/src/plugins/dashboard/server/saved_objects/dashboard_migrations.ts
index e5288afd81dce..8ebaf7f5bea94 100644
--- a/src/plugins/dashboard/server/saved_objects/dashboard_migrations.ts
+++ b/src/plugins/dashboard/server/saved_objects/dashboard_migrations.ts
@@ -19,25 +19,26 @@
 
 import { get, flow } from 'lodash';
 
-import { SavedObjectMigrationFn } from 'kibana/server';
+import {
+  SavedObjectMigrationFn,
+  SavedObjectUnsanitizedDoc,
+  SavedObjectMigrationContext,
+} from 'kibana/server';
 import { migrations730 } from './migrations_730';
 import { migrateMatchAllQuery } from './migrate_match_all_query';
+import { DashboardDoc700To720 } from '../../common';
 
-const migrations700: SavedObjectMigrationFn = doc => {
-  // Set new "references" attribute
-  doc.references = doc.references || [];
-
-  // Migrate index pattern
+function migrateIndexPattern(doc: DashboardDoc700To720) {
   const searchSourceJSON = get(doc, 'attributes.kibanaSavedObjectMeta.searchSourceJSON');
   if (typeof searchSourceJSON !== 'string') {
-    return doc;
+    return;
   }
   let searchSource;
   try {
     searchSource = JSON.parse(searchSourceJSON);
   } catch (e) {
     // Let it go, the data is invalid and we'll leave it as is
-    return doc;
+    return;
   }
   if (searchSource.index) {
     searchSource.indexRefName = 'kibanaSavedObjectMeta.searchSourceJSON.index';
@@ -63,28 +64,35 @@ const migrations700: SavedObjectMigrationFn = doc => {
     });
   }
   doc.attributes.kibanaSavedObjectMeta.searchSourceJSON = JSON.stringify(searchSource);
+}
 
+const migrations700: SavedObjectMigrationFn = (doc): DashboardDoc700To720 => {
+  // Set new "references" attribute
+  doc.references = doc.references || [];
+
+  // Migrate index pattern
+  migrateIndexPattern(doc as DashboardDoc700To720);
   // Migrate panels
   const panelsJSON = get(doc, 'attributes.panelsJSON');
   if (typeof panelsJSON !== 'string') {
-    return doc;
+    return doc as DashboardDoc700To720;
   }
   let panels;
   try {
     panels = JSON.parse(panelsJSON);
   } catch (e) {
     // Let it go, the data is invalid and we'll leave it as is
-    return doc;
+    return doc as DashboardDoc700To720;
   }
   if (!Array.isArray(panels)) {
-    return doc;
+    return doc as DashboardDoc700To720;
   }
   panels.forEach((panel, i) => {
     if (!panel.type || !panel.id) {
       return;
     }
     panel.panelRefName = `panel_${i}`;
-    doc.references.push({
+    doc.references!.push({
       name: `panel_${i}`,
       type: panel.type,
       id: panel.id,
@@ -93,7 +101,7 @@ const migrations700: SavedObjectMigrationFn = doc => {
     delete panel.id;
   });
   doc.attributes.panelsJSON = JSON.stringify(panels);
-  return doc;
+  return doc as DashboardDoc700To720;
 };
 
 export const dashboardSavedObjectTypeMigrations = {
@@ -108,6 +116,11 @@ export const dashboardSavedObjectTypeMigrations = {
    * only contained the 6.7.2 migration and not the 7.0.1 migration.
    */
   '6.7.2': flow<SavedObjectMigrationFn>(migrateMatchAllQuery),
-  '7.0.0': flow<SavedObjectMigrationFn>(migrations700),
-  '7.3.0': flow<SavedObjectMigrationFn>(migrations730),
+  '7.0.0': flow<(doc: SavedObjectUnsanitizedDoc) => DashboardDoc700To720>(migrations700),
+  '7.3.0': flow<
+    (
+      doc: SavedObjectUnsanitizedDoc,
+      context: SavedObjectMigrationContext
+    ) => SavedObjectUnsanitizedDoc
+  >(migrations730),
 };
diff --git a/src/plugins/dashboard/server/saved_objects/migrations_730.test.ts b/src/plugins/dashboard/server/saved_objects/migrations_730.test.ts
index 885c70e5b4235..aa744324428a4 100644
--- a/src/plugins/dashboard/server/saved_objects/migrations_730.test.ts
+++ b/src/plugins/dashboard/server/saved_objects/migrations_730.test.ts
@@ -95,8 +95,8 @@ test('dashboard migration 7.3.0 migrates filters to query on search source when
     },
   };
 
-  const doc700: DashboardDoc700To720 = migrations.dashboard['7.0.0'](doc, mockContext);
-  const newDoc = migrations.dashboard['7.3.0'](doc700, mockContext);
+  const doc700: DashboardDoc700To720 = migrations['7.0.0'](doc);
+  const newDoc = migrations['7.3.0'](doc700, mockContext);
 
   const parsedSearchSource = JSON.parse(newDoc.attributes.kibanaSavedObjectMeta.searchSourceJSON);
   expect(parsedSearchSource.filter.length).toBe(0);
@@ -127,8 +127,8 @@ test('dashboard migration works when panelsJSON is missing panelIndex', () => {
     },
   };
 
-  const doc700: DashboardDoc700To720 = migrations.dashboard['7.0.0'](doc, mockContext);
-  const newDoc = migrations.dashboard['7.3.0'](doc700, mockContext);
+  const doc700: DashboardDoc700To720 = migrations['7.0.0'](doc);
+  const newDoc = migrations['7.3.0'](doc700, mockContext);
 
   const parsedSearchSource = JSON.parse(newDoc.attributes.kibanaSavedObjectMeta.searchSourceJSON);
   expect(parsedSearchSource.filter.length).toBe(0);
diff --git a/src/plugins/dashboard/server/saved_objects/migrations_730.ts b/src/plugins/dashboard/server/saved_objects/migrations_730.ts
index 37de816b83291..e9d483f68a5da 100644
--- a/src/plugins/dashboard/server/saved_objects/migrations_730.ts
+++ b/src/plugins/dashboard/server/saved_objects/migrations_730.ts
@@ -18,13 +18,13 @@
  */
 
 import { inspect } from 'util';
-import { SavedObjectMigrationFn } from 'kibana/server';
+import { SavedObjectMigrationContext } from 'kibana/server';
 import { DashboardDoc730ToLatest } from '../../common';
 import { isDashboardDoc } from './is_dashboard_doc';
 import { moveFiltersToQuery } from './move_filters_to_query';
-import { migratePanelsTo730 } from '../../common/migrate_to_730_panels';
+import { migratePanelsTo730, DashboardDoc700To720 } from '../../common';
 
-export const migrations730: SavedObjectMigrationFn = (doc, { log }) => {
+export const migrations730 = (doc: DashboardDoc700To720, { log }: SavedObjectMigrationContext) => {
   if (!isDashboardDoc(doc)) {
     // NOTE: we should probably throw an error here... but for now following suit and in the
     // case of errors, just returning the same document.