diff --git a/packages/base/src/commands.ts b/packages/base/src/commands.ts
index ea6c17773..a7892b2a1 100644
--- a/packages/base/src/commands.ts
+++ b/packages/base/src/commands.ts
@@ -4,16 +4,19 @@ import { PathExt } from '@jupyterlab/coreutils';
 import { ITranslator } from '@jupyterlab/translation';
 import { redoIcon, undoIcon } from '@jupyterlab/ui-components';
 import {
+  IDict,
   IGeoJSONSource,
   IJGISFormSchemaRegistry,
+  IJGISLayer,
   IJGISLayerBrowserRegistry,
-  IJGISSource
+  IJGISSource,
+  IJupyterGISModel
 } from '@jupytergis/schema';
 import { UUID } from '@lumino/coreutils';
 import { Ajv } from 'ajv';
 import * as geojson from 'geojson-schema/GeoJSON.json';
 
-import { DataErrorDialog, DialogAddDataSourceBody } from './formdialog';
+import { DataErrorDialog, DialogAddDataSourceBody, FormDialog } from './formdialog';
 import { geoJSONIcon } from './icons';
 import { LayerBrowserWidget } from './layerBrowser/layerBrowserDialog';
 import { JupyterGISWidget } from './widget';
@@ -252,8 +255,6 @@ namespace Private {
         }
       };
 
-      current.context.model.syncFormData(form);
-
       FORM_SCHEMA['VectorLayer'].properties.source.enumNames =
         Object.values(sources);
       FORM_SCHEMA['VectorLayer'].properties.source.enum = Object.keys(sources);
@@ -283,9 +284,6 @@ namespace Private {
           };
 
           current.context.model.addLayer(UUID.uuid4(), layerModel);
-        },
-        cancelButton: () => {
-          current.context.model.syncFormData(undefined);
         }
       });
       await dialog.launch();
diff --git a/packages/base/src/panelview/formbuilder.tsx b/packages/base/src/panelview/formbuilder.tsx
index 7ca52a2f0..40324b577 100644
--- a/packages/base/src/panelview/formbuilder.tsx
+++ b/packages/base/src/panelview/formbuilder.tsx
@@ -407,11 +407,6 @@ export class GeoJSONSourcePropertiesForm extends ObjectPropertiesForm {
       }
     };
 
-    const internalData = this.state.internalData;
-    if (internalData) {
-      internalData.path = path;
-    }
-
     this.props.model
       .readGeoJSON(path)
       .then(async geoJSONData => {
@@ -422,11 +417,11 @@ export class GeoJSONSourcePropertiesForm extends ObjectPropertiesForm {
             extraErrors.path.__errors.push(error.message);
           });
         }
-        this.setState({ extraErrors, internalData });
+        this.setState({ extraErrors });
       })
       .catch(e => {
         extraErrors.path.__errors = ['Invalid path'];
-        this.setState({ extraErrors, internalData });
+        this.setState({ extraErrors });
       });
   }