diff --git a/packages/core/src/imports/parsers.ts b/packages/core/src/imports/parsers.ts
index 31eb4d2..6f20805 100644
--- a/packages/core/src/imports/parsers.ts
+++ b/packages/core/src/imports/parsers.ts
@@ -403,6 +403,9 @@ interface SimklItem {
   status?: string; // "completed", "watching", "plantowatch", "dropped", "hold"
   user_rating?: number;
   last_watched_at?: string;
+  added_to_watchlist_at?: string;
+  movie?: { title?: string; year?: number; ids?: SimklIds };
+  show?: { title?: string; year?: number; ids?: SimklIds };
   watched_episodes_count?: number;
   total_episodes_count?: number;
   seasons?: {
@@ -426,6 +429,36 @@ function mapSimklStatus(status?: string): "watchlist" | "in_progress" | "complet
   }
 }
 
+/**
+ * Simkl's API and its SimklBackup.json nest title metadata under `movie`/`show`;
+ * Sofa's public-api flattens it first. Accept both shapes. When episodes carry
+ * `watched_at`, only those are watched (the API lists unwatched ones too);
+ * when none do, every listed episode counts as watched.
+ */
+function normalizeSimklItem(item: SimklItem): SimklItem {
+  const media = item.movie ?? item.show;
+  const anyTimestamp = item.seasons?.some((s) => s.episodes?.some((ep) => ep.watched_at));
+  const seasons = anyTimestamp
+    ? item.seasons
+        ?.map((s) => ({ ...s, episodes: s.episodes?.filter((ep) => ep.watched_at) }))
+        .filter((s) => (s.episodes?.length ?? 0) > 0)
+    : item.seasons;
+  return {
+    ...item,
+    title: item.title ?? media?.title,
+    year: item.year ?? media?.year,
+    ids: item.ids ?? media?.ids,
+    seasons,
+  };
+}
+
+/** ISO timestamp for the schema's `.datetime()`, or undefined if unparseable. */
+function simklAddedAt(value?: string): string | undefined {
+  if (!value) return undefined;
+  const ms = Date.parse(value);
+  return Number.isNaN(ms) ? undefined : new Date(ms).toISOString();
+}
+
 export function parseSimklPayload(data: {
   movies?: SimklItem[];
   shows?: SimklItem[];
@@ -438,7 +471,8 @@ export function parseSimklPayload(data: {
   const ratings: ImportRating[] = [];
 
   // Movies
-  for (const item of data.movies ?? []) {
+  for (const raw of data.movies ?? []) {
+    const item = normalizeSimklItem(raw);
     if (!item.title) continue;
     const tmdbId =
       typeof item.ids?.tmdb === "number"
@@ -456,6 +490,7 @@ export function parseSimklPayload(data: {
         year: item.year,
         type: "movie",
         status: sofaStatus,
+        addedAt: simklAddedAt(item.added_to_watchlist_at),
       });
     }
 
@@ -491,7 +526,7 @@ export function parseSimklPayload(data: {
   }
 
   // Shows + Anime (both map to TV type)
-  const allShows = [...(data.shows ?? []), ...(data.anime ?? [])];
+  const allShows = [...(data.shows ?? []), ...(data.anime ?? [])].map(normalizeSimklItem);
   for (const item of allShows) {
     if (!item.title) continue;
     const tmdbId =
@@ -517,6 +552,7 @@ export function parseSimklPayload(data: {
         year: item.year,
         type: "tv",
         status: sofaStatus,
+        addedAt: simklAddedAt(item.added_to_watchlist_at),
       });
     }
 
diff --git a/packages/core/test/import-parsers.test.ts b/packages/core/test/import-parsers.test.ts
index 6b42b2b..9f05814 100644
--- a/packages/core/test/import-parsers.test.ts
+++ b/packages/core/test/import-parsers.test.ts
@@ -729,6 +729,88 @@ describe("parseSimklPayload", () => {
     // movie watch + library item, both without IDs
     expect(result.diagnostics?.unresolved).toBe(2);
   });
+
+  test("parses nested backup items", () => {
+    const result = parseSimklPayload({
+      movies: [
+        {
+          status: "completed",
+          last_watched_at: "2024-01-15T20:00:00Z",
+          user_rating: 8,
+          movie: { title: "Inception", year: 2010, ids: { tmdb: 27205, imdb: "tt1375666" } },
+        },
+      ],
+      shows: [
+        {
+          status: "watching",
+          show: { title: "Lost", year: 2004, ids: { tvdb: 73739 } },
+          seasons: [
+            {
+              number: 1,
+              episodes: [{ number: 1, watched_at: "2024-01-16T20:00:00Z" }, { number: 2 }],
+            },
+          ],
+        },
+      ],
+      anime: [{ status: "plantowatch", show: { title: "Frieren", ids: { tmdb: 209867 } } }],
+    } as never);
+
+    expect(result.data.movies).toHaveLength(1);
+    expect(result.data.movies[0].title).toBe("Inception");
+    expect(result.data.movies[0].tmdbId).toBe(27205);
+    expect(result.data.ratings.filter((r) => r.type === "movie")).toHaveLength(1);
+    expect(result.data.episodes).toHaveLength(1);
+    expect(result.data.episodes[0].seasonNumber).toBe(1);
+    expect(result.data.episodes[0].episodeNumber).toBe(1);
+    expect(result.data.watchlist.some((w) => w.type === "tv" && w.title === "Frieren")).toBe(true);
+  });
+
+  test("treats all listed episodes as watched when none carry watched_at", () => {
+    const result = parseSimklPayload({
+      shows: [
+        {
+          status: "watching",
+          show: { title: "Severance", ids: { tmdb: 95396 } },
+          seasons: [{ number: 1, episodes: [{ number: 1 }, { number: 2 }] }],
+        },
+      ],
+    } as never);
+
+    expect(result.data.episodes).toHaveLength(2);
+  });
+
+  test("maps added_to_watchlist_at to addedAt", () => {
+    const result = parseSimklPayload({
+      movies: [
+        {
+          status: "plantowatch",
+          added_to_watchlist_at: "2023-05-01T10:00:00Z",
+          movie: { title: "Dune", year: 2021, ids: { tmdb: 438631 } },
+        },
+      ],
+    } as never);
+
+    expect(result.data.watchlist).toHaveLength(1);
+    expect(new Date(result.data.watchlist[0].addedAt as string).toISOString()).toBe(
+      "2023-05-01T10:00:00.000Z",
+    );
+  });
+
+  test("keeps a watchlist item whose added_to_watchlist_at is unparseable", () => {
+    const result = parseSimklPayload({
+      movies: [
+        {
+          status: "plantowatch",
+          added_to_watchlist_at: "not a date",
+          movie: { title: "Odd Date", ids: { tmdb: 99 } },
+        },
+      ],
+    } as never);
+
+    expect(result.data.watchlist).toHaveLength(1);
+    expect(result.data.watchlist[0].title).toBe("Odd Date");
+    expect(result.data.watchlist[0].addedAt).toBeUndefined();
+  });
 });
 
 // ─── parseLetterboxdExport ───────────────────────────────────────────