diff --git a/src/locales/en.json b/src/locales/en.json
index db00eb4..2d17ee2 100644
--- a/src/locales/en.json
+++ b/src/locales/en.json
@@ -42,5 +42,6 @@
   "Select Project": "Select Project",
   "(no project)": "(no project)",
   "Export All Limit": "Export All Limit",
-  "Export All Limit Description": "Set the maximum number of conversations to load in the 'Export All' dialog."
+  "Export All Limit Description": "Set the maximum number of conversations to load in the 'Export All' dialog.",
+  "Select a source to load conversations": "Select a project above to load conversations."
 }
diff --git a/src/locales/es.json b/src/locales/es.json
index 850cdba..9c6da04 100644
--- a/src/locales/es.json
+++ b/src/locales/es.json
@@ -42,5 +42,6 @@
   "Select Project": "Seleccionar proyecto",
   "(no project)": "(sin proyecto)",
   "Export All Limit": "Límite de Exportar Todos",
-  "Export All Limit Description": "Establece el número máximo de conversaciones a cargar en el diálogo 'Exportar Todos'."
+  "Export All Limit Description": "Establece el número máximo de conversaciones a cargar en el diálogo 'Exportar Todos'.",
+  "Select a source to load conversations": "Selecciona un proyecto arriba para cargar conversaciones."
 }
diff --git a/src/locales/fr.json b/src/locales/fr.json
index 66c8811..3363339 100644
--- a/src/locales/fr.json
+++ b/src/locales/fr.json
@@ -42,5 +42,6 @@
   "Select Project": "Sélectionner un projet",
   "(no project)": "(aucun projet)",
   "Export All Limit": "Limite d'Exportation Multiple",
-  "Export All Limit Description": "Définit le nombre maximal de conversations à charger dans la boîte de dialogue 'Tout exporter'."
+  "Export All Limit Description": "Définit le nombre maximal de conversations à charger dans la boîte de dialogue 'Tout exporter'.",
+  "Select a source to load conversations": "Sélectionnez un projet ci-dessus pour charger les conversations."
 }
diff --git a/src/locales/id.json b/src/locales/id.json
index 15103ea..daf0251 100644
--- a/src/locales/id.json
+++ b/src/locales/id.json
@@ -42,5 +42,6 @@
   "Select Project": "Pilih Proyek",
   "(no project)": "(tidak ada proyek)",
   "Export All Limit": "Batas Ekspor Semua",
-  "Export All Limit Description": "Atur jumlah maksimum percakapan yang akan dimuat dalam dialog 'Ekspor Semua'."
+  "Export All Limit Description": "Atur jumlah maksimum percakapan yang akan dimuat dalam dialog 'Ekspor Semua'.",
+  "Select a source to load conversations": "Pilih proyek di atas untuk memuat percakapan."
 }
diff --git a/src/locales/jp.json b/src/locales/jp.json
index 0bf8fe6..e9f3199 100644
--- a/src/locales/jp.json
+++ b/src/locales/jp.json
@@ -42,5 +42,6 @@
   "Select Project": "プロジェクトを選択",
   "(no project)": "（プロジェクトなし）",
   "Export All Limit": "すべてエクスポートの上限",
-  "Export All Limit Description": "「すべてエクスポート」ダイアログで読み込む会話の最大数を設定します。"
+  "Export All Limit Description": "「すべてエクスポート」ダイアログで読み込む会話の最大数を設定します。",
+  "Select a source to load conversations": "上からプロジェクトを選択して会話を読み込んでください。"
 }
diff --git a/src/locales/ru.json b/src/locales/ru.json
index 5ae3b1b..fefc517 100644
--- a/src/locales/ru.json
+++ b/src/locales/ru.json
@@ -42,5 +42,6 @@
   "Select Project": "Выберите проект",
   "(no project)": "(нет проекта)",
   "Export All Limit": "Лимит экспорта всех",
-  "Export All Limit Description": "Установите максимальное количество бесед для загрузки в диалоге 'Экспортировать все'."
+  "Export All Limit Description": "Установите максимальное количество бесед для загрузки в диалоге 'Экспортировать все'.",
+  "Select a source to load conversations": "Выберите проект выше, чтобы загрузить беседы."
 }
diff --git a/src/locales/tr.json b/src/locales/tr.json
index 1055118..7ff79d3 100644
--- a/src/locales/tr.json
+++ b/src/locales/tr.json
@@ -42,5 +42,6 @@
   "Select Project": "Proje Seç",
   "(no project)": "(proje yok)",
   "Export All Limit": "Tümünü Dışa Aktarma Limiti",
-  "Export All Limit Description": "'Tümünü Dışa Aktar' iletişim kutusunda yüklenecek maksimum konuşma sayısını ayarlayın."
+  "Export All Limit Description": "'Tümünü Dışa Aktar' iletişim kutusunda yüklenecek maksimum konuşma sayısını ayarlayın.",
+  "Select a source to load conversations": "Konuşmaları yüklemek için yukarıdan bir proje seçin."
 }
diff --git a/src/locales/zh-Hans.json b/src/locales/zh-Hans.json
index 178d073..1940e5a 100644
--- a/src/locales/zh-Hans.json
+++ b/src/locales/zh-Hans.json
@@ -42,5 +42,6 @@
   "Select Project": "选择项目",
   "(no project)": "（无项目）",
   "Export All Limit": "批量导出上限",
-  "Export All Limit Description": "设置“批量导出”对话框中加载的最大对话数量。"
+  "Export All Limit Description": "设置“批量导出”对话框中加载的最大对话数量。",
+  "Select a source to load conversations": "请在上方选择一个项目以加载对话。"
 }
diff --git a/src/locales/zh-Hant.json b/src/locales/zh-Hant.json
index 1b3c884..2cf87f9 100644
--- a/src/locales/zh-Hant.json
+++ b/src/locales/zh-Hant.json
@@ -42,5 +42,6 @@
   "Select Project": "選擇專案",
   "(no project)": "（無專案）",
   "Export All Limit": "批量匯出上限",
-  "Export All Limit Description": "設定「批量匯出」對話方塊中載入的最大對話數量。"
+  "Export All Limit Description": "設定「批量匯出」對話方塊中載入的最大對話數量。",
+  "Select a source to load conversations": "請在上方選擇一個專案以載入對話。"
 }
diff --git a/src/ui/ExportDialog.tsx b/src/ui/ExportDialog.tsx
index 5eaecd2..dcbc890 100644
--- a/src/ui/ExportDialog.tsx
+++ b/src/ui/ExportDialog.tsx
@@ -7,7 +7,7 @@ import { exportAllToJson, exportAllToOfficialJson } from '../exporter/json'
 import { exportAllToMarkdown } from '../exporter/markdown'
 import { RequestQueue } from '../utils/queue'
 import { CheckBox } from './CheckBox'
-import { IconCross, IconUpload } from './Icons'
+import { IconCross, IconLoading, IconUpload } from './Icons'
 import { useSettingContext } from './SettingContext'
 import type { ApiConversationItem, ApiConversationWithId, ApiProjectInfo } from '../api'
 import type { FC } from '../type'
@@ -15,7 +15,7 @@ import type { ChangeEvent } from 'preact/compat'
 
 interface ProjectSelectProps {
     projects: ApiProjectInfo[]
-    selected: ApiProjectInfo | null
+    selected: ApiProjectInfo | null | undefined
     setSelected: (selected: ApiProjectInfo | null) => void
     disabled: boolean
 }
@@ -23,19 +23,24 @@ interface ProjectSelectProps {
 const ProjectSelect: FC<ProjectSelectProps> = ({ projects, selected, setSelected, disabled }) => {
     const { t } = useTranslation()
 
+    const value = selected === undefined ? '__unselected__' : (selected?.id || '')
+
     return (
         <div className="flex items-center text-gray-600 dark:text-gray-300 flex justify-between mb-3">
             {t('Select Project')}
             <select
                 disabled={disabled}
                 className="Select"
-                value={selected?.id || ''}
+                value={value}
                 onChange={(e) => {
                     const projectId = e.currentTarget.value
                     const project = projects.find(p => p.id === projectId)
                     setSelected(project || null)
                 }}
             >
+                {selected === undefined && (
+                    <option value="__unselected__" disabled>{t('Select Project')}...</option>
+                )}
                 <option value="">{t('(no project)')}</option>
                 {projects.map(project => (
                     <option key={project.id} value={project.id}>{project.display.name}</option>
@@ -75,6 +80,12 @@ const ConversationSelect: FC<ConversationSelectProps> = ({
                         setSelected(checked ? conversations : [])
                     }}
                 />
+                {loading && conversations.length > 0 && (
+                    <span className="flex items-center gap-1 text-sm text-gray-500 dark:text-gray-400">
+                        <IconLoading className="w-3 h-3" />
+                        {t('Loading')}... ({conversations.length})
+                    </span>
+                )}
             </div>
             <ul className="SelectList">
                 {loading && conversations.length === 0 && <li className="SelectItem">{t('Loading')}...</li>}
@@ -94,9 +105,6 @@ const ConversationSelect: FC<ConversationSelectProps> = ({
                         />
                     </li>
                 ))}
-                {loading && conversations.length > 0 && (
-                    <li className="SelectItem" style={{ opacity: 0.5, fontStyle: 'italic' }}>{t('Loading')}...</li>
-                )}
             </ul>
         </>
     )
@@ -129,7 +137,7 @@ const DialogContent: FC<DialogContentProps> = ({ format }) => {
     const [loading, setLoading] = useState(false)
     const [error, setError] = useState('')
     const [processing, setProcessing] = useState(false)
-    const [selectedProject, setSelectedProject] = useState<ApiProjectInfo | null>(null)
+    const [selectedProject, setSelectedProject] = useState<ApiProjectInfo | null | undefined>(undefined)
 
     const [selected, setSelected] = useState<ApiConversationItem[]>([])
     const [exportType, setExportType] = useState(exportAllOptions[0].label)
@@ -297,10 +305,12 @@ const DialogContent: FC<DialogContentProps> = ({ format }) => {
     }, [])
 
     useEffect(() => {
+        if (selectedProject === undefined) return
+        setSelected([])
         setApiConversations([])
         setLoading(true)
         fetchAllConversations(
-            selectedProject?.id,
+            selectedProject?.id ?? null,
             exportAllLimit,
             batch => setApiConversations(prev => [...prev, ...batch]),
         )
@@ -335,14 +345,22 @@ const DialogContent: FC<DialogContentProps> = ({ format }) => {
                 </div>
             )}
             <ProjectSelect projects={projects} selected={selectedProject} setSelected={setSelectedProject} disabled={processing} />
-            <ConversationSelect
-                conversations={conversations}
-                selected={selected}
-                setSelected={setSelected}
-                disabled={processing}
-                loading={loading}
-                error={error}
-            />
+            {selectedProject === undefined
+                ? (
+                    <div className="SelectList flex items-center justify-center text-gray-400 dark:text-gray-500 text-sm">
+                        {t('Select a source to load conversations')}
+                    </div>
+                    )
+                : (
+                    <ConversationSelect
+                        conversations={conversations}
+                        selected={selected}
+                        setSelected={setSelected}
+                        disabled={processing}
+                        loading={loading}
+                        error={error}
+                    />
+                    )}
             <div className="flex mt-6" style={{ justifyContent: 'space-between' }}>
                 <select className="Select" disabled={processing} value={exportType} onChange={e => setExportType(e.currentTarget.value)}>
                     {exportAllOptions.map(({ label }) => (