diff --git a/frontend/components/chat/action-preview-card.tsx b/frontend/components/chat/action-preview-card.tsx
index e3c8658..ec9e203 100644
--- a/frontend/components/chat/action-preview-card.tsx
+++ b/frontend/components/chat/action-preview-card.tsx
@@ -214,9 +214,23 @@ export function RecordSummary({
 // The human approval gate for an agent-proposed add. The agent drafts the record
 // (dry run, nothing written); the clinician reviews it here, may edit it, and
 // must approve before it is committed via the matching RBAC-gated create endpoint.
-export function ActionPreviewCard({ data }: { data: ActionPreviewData }) {
+export function ActionPreviewCard({
+  data,
+  onResolved,
+}: {
+  data: ActionPreviewData;
+  // Called once committed/discarded so the parent can persist the resolution
+  // (prevents re-adding after re-render or conversation reload).
+  onResolved?: (resolution: "added" | "discarded") => void;
+}) {
   const { t } = useTranslation();
-  const [status, setStatus] = useState<Status>("pending");
+  const [status, setStatus] = useState<Status>(
+    data.resolved === "added"
+      ? "done"
+      : data.resolved === "discarded"
+        ? "rejected"
+        : "pending",
+  );
   // Editable working copy of the proposed record (edits commit, not the draft).
   const [record, setRecord] = useState<Record<string, unknown>>(
     data.record as Record<string, unknown>,
@@ -230,6 +244,7 @@ export function ActionPreviewCard({ data }: { data: ActionPreviewData }) {
     try {
       await commitAction({ ...data, record });
       setStatus("done");
+      onResolved?.("added");
       notify.success(
         t("chat.actionCard.addedTitle"),
         t(`chat.actionCard.kind.${data.kind}`),
@@ -300,7 +315,10 @@ export function ActionPreviewCard({ data }: { data: ActionPreviewData }) {
           </Button>
           <Button
             disabled={status === "committing"}
-            onClick={() => setStatus("rejected")}
+            onClick={() => {
+              setStatus("rejected");
+              onResolved?.("discarded");
+            }}
             size="sm"
             variant="outline"
           >
diff --git a/frontend/components/chat/batch-action-preview-card.tsx b/frontend/components/chat/batch-action-preview-card.tsx
index ea3a4dc..836cbdd 100644
--- a/frontend/components/chat/batch-action-preview-card.tsx
+++ b/frontend/components/chat/batch-action-preview-card.tsx
@@ -32,11 +32,25 @@ type Status = "pending" | "committing" | "done" | "rejected";
 // the full list in a dialog, removes any they don't want, and adds them all at
 // once. Each commit goes through the same RBAC-gated create endpoint as the
 // single-record card; appointments without a file number create a patient.
-export function BatchActionPreviewCard({ items }: { items: ActionPreviewData[] }) {
+export function BatchActionPreviewCard({
+  items,
+  onResolved,
+}: {
+  items: ActionPreviewData[];
+  // Called once committed/discarded so the parent can persist the resolution
+  // across re-render and conversation reload (prevents re-adding).
+  onResolved?: (resolution: "added" | "discarded") => void;
+}) {
   const { t } = useTranslation();
   const [open, setOpen] = useState(false);
   const [removed, setRemoved] = useState<Set<string>>(new Set());
-  const [status, setStatus] = useState<Status>("pending");
+  const [status, setStatus] = useState<Status>(
+    items[0]?.resolved === "added"
+      ? "done"
+      : items[0]?.resolved === "discarded"
+        ? "rejected"
+        : "pending",
+  );
   const [result, setResult] = useState<{ added: number; failed: number } | null>(
     null,
   );
@@ -74,6 +88,7 @@ export function BatchActionPreviewCard({ items }: { items: ActionPreviewData[] }
     setResult({ added, failed });
     setStatus("done");
     setOpen(false);
+    onResolved?.("added");
     if (added > 0) {
       notify.success(
         t("chat.actionCard.addedTitle"),
@@ -90,6 +105,7 @@ export function BatchActionPreviewCard({ items }: { items: ActionPreviewData[] }
   const discardAll = () => {
     setStatus("rejected");
     setOpen(false);
+    onResolved?.("discarded");
   };
 
   return (
@@ -105,16 +121,19 @@ export function BatchActionPreviewCard({ items }: { items: ActionPreviewData[] }
         </Badge>
       </div>
 
-      {status === "done" && result ? (
+      {status === "done" ? (
         <p className="flex items-center gap-1.5 text-foreground text-sm">
           <Check className="size-4" />
-          {t("chat.actionCard.batch.done", {
-            added: result.added,
-            total: items.length,
-          })}
-          {result.failed > 0
-            ? ` · ${t("chat.actionCard.batch.failedCount", { count: result.failed })}`
-            : ""}
+          {result
+            ? `${t("chat.actionCard.batch.done", {
+                added: result.added,
+                total: items.length,
+              })}${
+                result.failed > 0
+                  ? ` · ${t("chat.actionCard.batch.failedCount", { count: result.failed })}`
+                  : ""
+              }`
+            : t("chat.actionCard.batch.alreadyAdded")}
         </p>
       ) : status === "rejected" ? (
         <p className="text-muted-foreground text-sm">
diff --git a/frontend/components/chat/chat-panel.tsx b/frontend/components/chat/chat-panel.tsx
index dec37c1..b2c26a9 100644
--- a/frontend/components/chat/chat-panel.tsx
+++ b/frontend/components/chat/chat-panel.tsx
@@ -154,6 +154,29 @@ export function ChatPanel() {
   const { messages, setMessages, sendMessage, status, stop, error } =
     useChat<TemetroUIMessage>({ transport });
 
+  // Mark a proposal/import card as committed or discarded by stamping the data
+  // part, so it persists through re-render and conversation reload (and can't be
+  // submitted twice). `partIndex < 0` marks every action-preview part in the
+  // message (used by the batched card).
+  const resolveProposal = useCallback(
+    (messageId: string, partIndex: number, resolution: "added" | "discarded") => {
+      setMessages((prev) =>
+        prev.map((m) => {
+          if (m.id !== messageId) return m;
+          const parts = m.parts.map((p, idx) => {
+            const isTarget =
+              partIndex < 0 ? p.type === "data-actionPreview" : idx === partIndex;
+            if (!isTarget) return p;
+            const data = (p as { data?: Record<string, unknown> }).data;
+            return data ? { ...p, data: { ...data, resolved: resolution } } : p;
+          }) as typeof m.parts;
+          return { ...m, parts };
+        }),
+      );
+    },
+    [setMessages],
+  );
+
   // Seed the model + effort from the user's saved AI config so the chat uses the
   // provider they actually configured (e.g. their Gemini default), not a stale
   // hardcoded default.
@@ -577,7 +600,13 @@ export function ChatPanel() {
               return <LabChartCard data={part.data} key={key} />;
             }
             if (part.type === "data-importPreview") {
-              return <ImportPreviewCard data={part.data} key={key} />;
+              return (
+                <ImportPreviewCard
+                  data={part.data}
+                  key={key}
+                  onResolved={(r) => resolveProposal(message.id, i, r)}
+                />
+              );
             }
             if (part.type === "data-actionPreview") {
               if (actionPreviews.length >= 2) {
@@ -589,10 +618,18 @@ export function ChatPanel() {
                       (p) => (p as { data: ActionPreviewData }).data,
                     )}
                     key={key}
+                    // -1 marks every action-preview part in this message.
+                    onResolved={(r) => resolveProposal(message.id, -1, r)}
                   />
                 );
               }
-              return <ActionPreviewCard data={part.data} key={key} />;
+              return (
+                <ActionPreviewCard
+                  data={part.data}
+                  key={key}
+                  onResolved={(r) => resolveProposal(message.id, i, r)}
+                />
+              );
             }
             if (part.type === "data-appointmentList") {
               return (
diff --git a/frontend/components/chat/import-preview-card.tsx b/frontend/components/chat/import-preview-card.tsx
index 1c8dec2..9b0e0d6 100644
--- a/frontend/components/chat/import-preview-card.tsx
+++ b/frontend/components/chat/import-preview-card.tsx
@@ -111,9 +111,23 @@ function toPatientDraft(rec: unknown): Patient {
 // (dry run, nothing written); the clinician reviews counts, can open and edit
 // any record (fixing skipped rows), and must approve before anything is
 // inserted via POST /api/ai/import.
-export function ImportPreviewCard({ data }: { data: ImportPreviewData }) {
+export function ImportPreviewCard({
+  data,
+  onResolved,
+}: {
+  data: ImportPreviewData;
+  // Called once imported/discarded so the parent can persist the resolution
+  // across re-render and conversation reload (prevents re-importing).
+  onResolved?: (resolution: "added" | "discarded") => void;
+}) {
   const { t } = useTranslation();
-  const [status, setStatus] = useState<Status>("pending");
+  const [status, setStatus] = useState<Status>(
+    data.resolved === "added"
+      ? "done"
+      : data.resolved === "discarded"
+        ? "rejected"
+        : "pending",
+  );
   const [result, setResult] = useState<{ created: number; failed: number } | null>(
     null,
   );
@@ -161,6 +175,7 @@ export function ImportPreviewCard({ data }: { data: ImportPreviewData }) {
       setResult({ created: res.created.length, failed: res.failed.length });
       setStatus("done");
       setReviewOpen(false);
+      onResolved?.("added");
       notify.success(
         t("chat.importCard.importedTitle"),
         t("chat.importCard.importedBody", { count: res.created.length }),
@@ -216,13 +231,16 @@ export function ImportPreviewCard({ data }: { data: ImportPreviewData }) {
         </p>
       ) : null}
 
-      {status === "done" && result ? (
+      {status === "done" ? (
         <p className="flex items-center gap-1.5 text-sm text-foreground">
           <Check className="size-4" />
-          {t("chat.importCard.importedBody", { count: result.created })}
-          {result.failed > 0
-            ? ` · ${t("chat.importCard.failedCount", { count: result.failed })}`
-            : ""}
+          {result
+            ? `${t("chat.importCard.importedBody", { count: result.created })}${
+                result.failed > 0
+                  ? ` · ${t("chat.importCard.failedCount", { count: result.failed })}`
+                  : ""
+              }`
+            : t("chat.importCard.alreadyImported")}
         </p>
       ) : status === "rejected" ? (
         <p className="text-sm text-muted-foreground">
@@ -241,7 +259,10 @@ export function ImportPreviewCard({ data }: { data: ImportPreviewData }) {
           </Button>
           <Button
             disabled={status === "committing"}
-            onClick={() => setStatus("rejected")}
+            onClick={() => {
+              setStatus("rejected");
+              onResolved?.("discarded");
+            }}
             size="sm"
             variant="outline"
           >
diff --git a/frontend/lib/ai-chat.ts b/frontend/lib/ai-chat.ts
index 31c0455..ae8d4a7 100644
--- a/frontend/lib/ai-chat.ts
+++ b/frontend/lib/ai-chat.ts
@@ -26,6 +26,9 @@ export type ImportPreviewData = {
   // Skipped rows, with their errors and the original record (for editing).
   invalid: { index: number; errors: string[]; record: unknown }[];
   total: number;
+  // Set by the client once imported/discarded so the card stays locked across
+  // re-render and conversation reload.
+  resolved?: "added" | "discarded";
 };
 
 export type VeilNoticeData = {
@@ -66,6 +69,9 @@ export type ActionPreviewData = {
   kind: ActionPreviewKind;
   record: unknown;
   issues?: string[];
+  // Set by the client once committed/discarded so the card stays locked across
+  // re-render and conversation reload (prevents a duplicate add).
+  resolved?: "added" | "discarded";
 };
 
 // Maps each data part name → its payload. Part `type` strings are the key
diff --git a/frontend/lib/i18n/locales/en/translation.json b/frontend/lib/i18n/locales/en/translation.json
index f14732a..9a7c904 100644
--- a/frontend/lib/i18n/locales/en/translation.json
+++ b/frontend/lib/i18n/locales/en/translation.json
@@ -1025,6 +1025,7 @@
         "edited": "Edited",
         "remove": "Remove",
         "done": "Added {{added}} of {{total}}.",
+        "alreadyAdded": "Added.",
         "failedCount": "{{count}} failed",
         "discarded": "Discarded — nothing was saved."
       }
@@ -1087,6 +1088,7 @@
       "rejectedNote": "Import discarded. Nothing was written.",
       "importedTitle": "Records imported",
       "importedBody": "Imported {{count}} patient record(s).",
+      "alreadyImported": "Imported.",
       "failedCount": "{{count}} failed",
       "failedTitle": "Import failed",
       "failedBody": "The records could not be imported. Please try again."