diff --git a/umap/static/umap/js/modules/data/layer.js b/umap/static/umap/js/modules/data/layer.js
index 0529f627..6a686833 100644
--- a/umap/static/umap/js/modules/data/layer.js
+++ b/umap/static/umap/js/modules/data/layer.js
@@ -88,7 +88,6 @@ export class DataLayer extends ServerStored {
 
     if (!this.createdOnServer) {
       if (this.showAtLoad()) this.show()
-      this.isDirty = true
     }
 
     // Only layers that are displayed on load must be hidden/shown
@@ -591,7 +590,7 @@ export class DataLayer extends ServerStored {
     options.name = translate('Clone of {name}', { name: this.options.name })
     delete options.id
     const geojson = Utils.CopyJSON(this._geojson)
-    const datalayer = this._umap.createDataLayer(options)
+    const datalayer = this._umap.createDirtyDataLayer(options)
     datalayer.fromGeoJSON(geojson)
     return datalayer
   }
diff --git a/umap/static/umap/js/modules/importer.js b/umap/static/umap/js/modules/importer.js
index 02ebd340..1da6d566 100644
--- a/umap/static/umap/js/modules/importer.js
+++ b/umap/static/umap/js/modules/importer.js
@@ -161,7 +161,7 @@ export default class Importer extends Utils.WithTemplate {
   get layer() {
     return (
       this._umap.datalayers[this.layerId] ||
-      this._umap.createDataLayer({ name: this.layerName })
+      this._umap.createDirtyDataLayer({ name: this.layerName })
     )
   }
 
diff --git a/umap/static/umap/js/modules/umap.js b/umap/static/umap/js/modules/umap.js
index 258b45db..b0bb3137 100644
--- a/umap/static/umap/js/modules/umap.js
+++ b/umap/static/umap/js/modules/umap.js
@@ -323,14 +323,14 @@ export default class Umap extends ServerStored {
         dataUrl = decodeURIComponent(dataUrl)
         dataUrl = this.renderUrl(dataUrl)
         dataUrl = this.proxyUrl(dataUrl)
-        const datalayer = this.createDataLayer()
+        const datalayer = this.createDirtyDataLayer()
         await datalayer
           .importFromUrl(dataUrl, dataFormat)
           .then(() => datalayer.zoomTo())
       }
     } else if (data) {
       data = decodeURIComponent(data)
-      const datalayer = this.createDataLayer()
+      const datalayer = this.createDirtyDataLayer()
       await datalayer.importRaw(data, dataFormat).then(() => datalayer.zoomTo())
     }
   }
@@ -598,8 +598,14 @@ export default class Umap extends ServerStored {
     return datalayer
   }
 
+  createDirtyDataLayer(options) {
+    const datalayer = this.createDataLayer(options, true)
+    datalayer.isDirty = true
+    return datalayer
+  }
+
   newDataLayer() {
-    const datalayer = this.createDataLayer({})
+    const datalayer = this.createDirtyDataLayer({})
     datalayer.edit()
   }
 
@@ -1383,7 +1389,7 @@ export default class Umap extends ServerStored {
       fallback.show()
       return fallback
     }
-    return this.createDataLayer()
+    return this.createDirtyDataLayer()
   }
 
   findDataLayer(method, context) {
@@ -1547,7 +1553,7 @@ export default class Umap extends ServerStored {
     if (type === 'umap') {
       this.importUmapFile(file, 'umap')
     } else {
-      if (!layer) layer = this.createDataLayer({ name: file.name })
+      if (!layer) layer = this.createDirtyDataLayer({ name: file.name })
       layer.importFromFile(file, type)
     }
   }
@@ -1573,7 +1579,7 @@ export default class Umap extends ServerStored {
         delete geojson._storage
       }
       delete geojson._umap_options?.id // Never trust an id at this stage
-      const dataLayer = this.createDataLayer(geojson._umap_options)
+      const dataLayer = this.createDirtyDataLayer(geojson._umap_options)
       dataLayer.fromUmapGeoJSON(geojson)
     }