diff --git a/package.json b/package.json
index 1fdff57..6f69a3d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "lagrange",
-  "version": "0.2.1",
+  "version": "0.2.2",
   "private": true,
   "type": "module",
   "scripts": {
diff --git a/src/core/import.helper.ts b/src/core/import.helper.ts
new file mode 100644
index 0000000..a478211
--- /dev/null
+++ b/src/core/import.helper.ts
@@ -0,0 +1,42 @@
+import type { IDBPlanet } from '@/dexie.config'
+import PlanetData from './models/planet-data.model'
+import pako from 'pako'
+import { nanoid } from 'nanoid'
+
+export function readFileData(buf: ArrayBuffer): IDBPlanet | undefined {
+  const rawData = JSON.parse(pako.inflate(buf, { to: 'string' }))
+  if (rawData.version || rawData.data) {
+    return readFileV2(rawData)
+  } else {
+    return readFileV1(rawData) // Only v1 files have no version attached
+  }
+}
+
+function readFileV2(rawData: IDBPlanet): IDBPlanet | undefined {
+  try {
+    const newIdb: IDBPlanet = {
+      id: rawData.id,
+      data: PlanetData.createFrom(rawData.data),
+      preview: rawData.preview,
+    }
+    console.debug('[import] Read file data as version 2')
+    return newIdb
+  } catch (err) {
+    console.error(err)
+    return undefined
+  }
+}
+
+function readFileV1(rawData: PlanetData): IDBPlanet | undefined {
+  try {
+    const newIdb: IDBPlanet = {
+      id: nanoid(),
+      data: PlanetData.createFrom(rawData),
+    }
+    console.debug('[import] Read file data as version 1')
+    return newIdb
+  } catch (err) {
+    console.error(err)
+    return undefined
+  }
+}
diff --git a/src/dexie.config.ts b/src/dexie.config.ts
index fb56644..4d5cb4e 100644
--- a/src/dexie.config.ts
+++ b/src/dexie.config.ts
@@ -28,6 +28,7 @@ interface IDBSettings {
 
 interface IDBPlanet {
   id: string
+  version?: string
   preview?: string
   data: PlanetData
 }
diff --git a/src/views/CodexView.vue b/src/views/CodexView.vue
index cdc3bec..19a1b35 100644
--- a/src/views/CodexView.vue
+++ b/src/views/CodexView.vue
@@ -64,6 +64,7 @@ import { saveAs } from 'file-saver'
 import PlanetData from '@/core/models/planet-data.model'
 import JSZip from 'jszip'
 import NewCardElement from '@/components/elements/NewCardElement.vue'
+import { readFileData } from '@/core/import.helper'
 
 const i18n = useI18n()
 const fileInput: Ref<HTMLInputElement | null> = ref(null)
@@ -125,17 +126,10 @@ async function importPlanetFile(event: Event) {
     const reader = new FileReader()
     return new Promise<IDBPlanet>((resolve, reject) => {
       reader.onload = async (e) => {
-        try {
-          const data = JSON.parse(pako.inflate(e.target?.result as ArrayBuffer, { to: 'string' })) as IDBPlanet
-          const newIdb: IDBPlanet = {
-            id: data.id,
-            data: PlanetData.createFrom(data.data),
-            preview: data.preview,
-          }
-          console.info(`Imported planet (ID=${newIdb.id}): [${newIdb.data.planetName}]`)
-          resolve(newIdb)
-        } catch (err) {
-          console.error(err)
+        const data = readFileData(e.target?.result as ArrayBuffer)
+        if (data) {
+          resolve(data)
+        } else {
           reject()
         }
       }
@@ -145,21 +139,28 @@ async function importPlanetFile(event: Event) {
 
   try {
     const newPlanets: PromiseSettledResult<IDBPlanet>[] = await Promise.allSettled(readPromises)
-    if (newPlanets.every((p) => p.status === 'rejected')) {
+    const rejectedFiles = newPlanets.filter((p) => p.status === 'rejected')
+    if (rejectedFiles.length === newPlanets.length) {
       EventBus.sendToastEvent('warn', 'toast.import_failure', 3000)
       return
     }
-    await idb.planets.bulkAdd(
+
+    const allAdded = await idb.planets.bulkPut(
       newPlanets
         .filter((np) => np.status === 'fulfilled')
-        .map((np: PromiseSettledResult<IDBPlanet>) => (np as PromiseFulfilledResult<IDBPlanet>).value),
+        .map((np: PromiseSettledResult<IDBPlanet>) => (np as PromiseFulfilledResult<IDBPlanet>).value)
+        .map((np) => ({ ...np, version: np.version ?? '1' })),
     )
+    if (allAdded && rejectedFiles.length === 0) {
+      EventBus.sendToastEvent('success', 'toast.import_success', 3000)
+    } else {
+      EventBus.sendToastEvent('warn', 'toast.import_partial', 3000)
+    }
   } catch (_) {
     EventBus.sendToastEvent('warn', 'toast.import_partial', 3000)
   } finally {
     await loadPlanets()
     fileInput.value!.value = ''
-    EventBus.sendToastEvent('success', 'toast.import_success', 3000)
   }
 }
 
diff --git a/src/views/PlanetEditorView.vue b/src/views/PlanetEditorView.vue
index 05b737c..df0328b 100644
--- a/src/views/PlanetEditorView.vue
+++ b/src/views/PlanetEditorView.vue
@@ -318,6 +318,7 @@ async function savePlanet() {
   const localData = toRaw(JSON.stringify(LG_PLANET_DATA.value))
   const idbData: IDBPlanet = {
     id: $planetEntityId.value.length > 0 ? $planetEntityId.value : nanoid(),
+    version: '2',
     data: JSON.parse(localData),
     preview: previewDataString,
   }