Ignore moving category channels to another category

discord/abc.py

@@ -751,6 +751,7 @@ class GuildChannel:
         category: Optional[:class:`abc.Snowflake`]
             The category to move this channel under.
             If ``None`` is given then it moves it out of the category.
+            This parameter is ignored if moving a category channel.
         sync_permissions: :class:`bool`
             Whether to sync the permissions with the category (if given).
         reason: :class:`str`

discord/channel.py

@@ -823,6 +823,11 @@ class CategoryChannel(discord.abc.GuildChannel, Hashable):
 
         await self._edit(options=options, reason=reason)
 
+    @utils.copy_doc(discord.abc.GuildChannel.move)
+    async def move(self, **kwargs):
+        kwargs.pop('category', None)
+        await super().move(**kwargs)
+
     @property
     def channels(self):
         """List[:class:`abc.GuildChannel`]: Returns the channels that are under this category.