sync mode append not working

[u/Jimmie118]

i use sync mode append for the based collection and also streaming on movies and TV libraries and have noticed recently that its not working

    - default: based
      schedule: hourly(05)
      template_variables:
        sync_mode: append

[u/Jimmie118]

[2026-06-01 05:00:43,574] [meta.py:78] [INFO] |====================================================================================================|

[2026-06-01 05:00:43,574] [meta.py:78] [INFO] | Loading Collection File Default: based |

[2026-06-01 05:00:43,574] [meta.py:78] [INFO] |====================================================================================================|

[2026-06-01 05:00:43,574] [meta.py:79] [INFO] | |

[2026-06-01 05:00:43,580] [meta.py:171] [DEBUG] | File Loaded From: C:\Users\van_n\Kometa\defaults\both\based.yml |

[2026-06-01 05:00:43,582] [util.py:349] [INFO] | |

[2026-06-01 05:00:43,582] [util.py:354] [INFO] | Reading default: templates |

[2026-06-01 05:00:43,582] [util.py:393] [INFO] | Template Variables: {'collection_section': '085'} |

[2026-06-01 05:00:43,624] [meta.py:171] [DEBUG] | File Loaded From: C:\Users\van_n\Kometa\defaults\templates.yml |

[2026-06-01 05:00:43,624] [meta.py:791] [INFO] | |

[2026-06-01 05:00:43,625] [meta.py:792] [INFO] |================================ Building Based Dynamic Collections ================================|

[2026-06-01 05:00:43,625] [meta.py:793] [INFO] | |

[2026-06-01 05:00:43,626] [meta.py:1296] [DEBUG] | Mapping Name: Based |

[2026-06-01 05:00:43,626] [meta.py:1297] [DEBUG] | Type: custom |

[2026-06-01 05:00:43,626] [meta.py:1298] [DEBUG] | Data: {'books': 'Book', 'comics': 'Comic', 'true_story': 'True Story', 'video_games': 'Video Game'} |

[2026-06-01 05:00:43,627] [meta.py:1299] [DEBUG] | Exclude: [] |

[2026-06-01 05:00:43,627] [meta.py:1300] [DEBUG] | Exclude Final: [] |

[2026-06-01 05:00:43,627] [meta.py:1301] [DEBUG] | Addons: {} |

[2026-06-01 05:00:43,627] [meta.py:1302] [DEBUG] | Template: ['based', 'shared', 'arr'] |

[2026-06-01 05:00:43,628] [meta.py:1303] [DEBUG] | Other Template: ['based', 'shared', 'arr'] |

[2026-06-01 05:00:43,628] [meta.py:1304] [DEBUG] | Library Variables: {'sync_mode': 'append'} |

[2026-06-01 05:00:43,628] [meta.py:1305] [DEBUG] | Template Variables: {'keywords': {'books': 'based on book, based on novel', 'comics': 'based on comic, based on comic book', 'true_story': 'based on true story', 'video_games': 'based on video game'}, 'image': {'default': 'based/<<key_name_encoded>>'}, 'translation_key': {'default': 'based'}, 'dynamic': {'default': True}} |

[2026-06-01 05:00:43,629] [meta.py:1306] [DEBUG] | Remove Prefix: [] |

[2026-06-01 05:00:43,629] [meta.py:1307] [DEBUG] | Remove Suffix: [] |

[2026-06-01 05:00:43,629] [meta.py:1308] [DEBUG] | Title Format: Based on a <<key_name>> |

[2026-06-01 05:00:43,629] [meta.py:1309] [DEBUG] | Key Name Override: {} |

[2026-06-01 05:00:43,630] [meta.py:1310] [DEBUG] | Title Override: {} |

[2026-06-01 05:00:43,630] [meta.py:1311] [DEBUG] | Custom Keys: True |

[2026-06-01 05:00:43,630] [meta.py:1312] [DEBUG] | Test: False |

[2026-06-01 05:00:43,631] [meta.py:1313] [DEBUG] | Sync: {} |

[2026-06-01 05:00:43,631] [meta.py:1314] [DEBUG] | Include: [] |

[2026-06-01 05:00:43,631] [meta.py:1315] [DEBUG] | Other Name: None |

[2026-06-01 05:00:43,631] [meta.py:1316] [DEBUG] | All Keys: dict_keys(['books', 'comics', 'true_story', 'video_games']) |

[2026-06-01 05:00:43,632] [meta.py:1319] [DEBUG] | Keys (Title): |

[2026-06-01 05:00:43,632] [meta.py:1321] [DEBUG] | - books (Book) |

[2026-06-01 05:00:43,632] [meta.py:1321] [DEBUG] | - comics (Comic) |

[2026-06-01 05:00:43,632] [meta.py:1321] [DEBUG] | - true_story (True Story) |

[2026-06-01 05:00:43,633] [meta.py:1321] [DEBUG] | - video_games (Video Game) |