diff --git a/plextraktsync/sync.py b/plextraktsync/sync.py
index 4a80e8a99f..d49b9792ff 100644
--- a/plextraktsync/sync.py
+++ b/plextraktsync/sync.py
@@ -126,20 +126,28 @@ def trakt_wl_shows(self) -> Dict[int, TVShow]:
 
     def sync(self, walker: Walker, dry_run=False):
         listutil = TraktListUtil()
+        is_partial = walker.is_partial
 
         if self.config.update_plex_wl_as_pl:
-            listutil.addList(None, "Trakt Watchlist", trakt_list=self.trakt.watchlist_movies)
+            if is_partial:
+                logger.warning("Running partial library sync. Watchlist as playlist won't update because it needs full library sync.")
+            else:
+                listutil.addList(None, "Trakt Watchlist", trakt_list=self.trakt.watchlist_movies)
 
         if self.config.sync_liked_lists:
-            for lst in self.trakt.liked_lists:
-                listutil.addList(lst["listid"], lst["listname"])
+            if is_partial:
+                logger.warning("Partial walk, disabling liked lists updating. Liked lists won't update because it needs full library sync.")
+            else:
+                for lst in self.trakt.liked_lists:
+                    listutil.addList(lst["listid"], lst["listname"])
 
         if self.config.need_library_walk:
             for movie in walker.find_movies():
                 self.sync_collection(movie, dry_run=dry_run)
                 self.sync_ratings(movie, dry_run=dry_run)
                 self.sync_watched(movie, dry_run=dry_run)
-                listutil.addPlexItemToLists(movie)
+                if not is_partial:
+                    listutil.addPlexItemToLists(movie)
             self.trakt.flush()
 
             shows = set()
@@ -147,7 +155,8 @@ def sync(self, walker: Walker, dry_run=False):
                 self.sync_collection(episode, dry_run=dry_run)
                 self.sync_ratings(episode, dry_run=dry_run)
                 self.sync_watched(episode, dry_run=dry_run)
-                listutil.addPlexItemToLists(episode)
+                if not is_partial:
+                    listutil.addPlexItemToLists(episode)
                 if self.config.sync_ratings:
                     # collect shows for later ratings sync
                     shows.add(episode.show)
@@ -157,11 +166,14 @@ def sync(self, walker: Walker, dry_run=False):
                 self.sync_ratings(show, dry_run=dry_run)
 
         if self.sync_wl or self.config.sync_liked_lists:
-            with measure_time("Updated watchlist and/or liked list"):
-                if self.config.update_plex_wl_as_pl or self.config.sync_liked_lists:
-                    self.update_playlists(listutil, dry_run=dry_run)
-                if self.sync_wl:
-                    self.sync_watchlist(walker, dry_run=dry_run)
+            if is_partial:
+                logger.warning("Partial walk, watchlist and/or liked list updating was skipped")
+            else:
+                with measure_time("Updated watchlist and/or liked list"):
+                    if self.config.update_plex_wl_as_pl or self.config.sync_liked_lists:
+                        self.update_playlists(listutil, dry_run=dry_run)
+                    if self.sync_wl:
+                        self.sync_watchlist(walker, dry_run=dry_run)
 
         if not dry_run:
             self.trakt.flush()
diff --git a/plextraktsync/walker.py b/plextraktsync/walker.py
index 7398cef83b..5cc28522b3 100644
--- a/plextraktsync/walker.py
+++ b/plextraktsync/walker.py
@@ -43,6 +43,19 @@ def add_show(self, show):
     def add_movie(self, movie):
         self.movie.append(movie)
 
+    @property
+    def is_partial(self):
+        """
+        Returns true if partial library walk is performed.
+        Due the way watchlist is filled, watchlists should only be updated on full walk.
+        """
+        # Single item provided
+        if self.library or self.movie or self.show or self.id:
+            return True
+
+        # Must sync both movies and shows to be full sync
+        return not self.walk_movies or not self.walk_shows
+
     def is_valid(self):
         # Single item provided
         if self.library or self.movie or self.show or self.id:
@@ -212,6 +225,10 @@ def __init__(
     def plan(self):
         return WalkPlanner(self.plex, self.config).plan()
 
+    @property
+    def is_partial(self):
+        return self.config.is_partial
+
     def print_plan(self, print=print):
         if self.plan.movie_sections:
             print(f"Sync Movie sections: {self.plan.movie_sections}")