> For the complete documentation index, see [llms.txt](https://wiki.crosswatch.app/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki.crosswatch.app/crosswatch/settings/configure-pairs/features/collection.md).

# Collection

Sync items from a source library or tracker collection into a target collection.

Collections are **one-way only**. Enabling Collection locks the pair to **One-way** mode.

For Plex, Emby, Jellyfin, and Kodi, Collection means items in selected media libraries. It does not mean named media-server collections.

### Controls

* **Enable**: turns on Collection sync for the pair.
* **Add / Update**: adds source items missing from the target collection.
* **Remove**: removes target items removed from the source.
* **Scope**: selects Movies, Shows, Seasons, and Episodes.

CrossWatch shows only media types supported by both providers.

### How it works

The first run creates the Collection baseline.

Later runs are delta-based. CrossWatch processes only changes since the prior state.

Where supported, CrossWatch preserves the original collection added date.

### Supported directions

Collection sources include:

* Plex
* Emby
* Jellyfin
* Kodi
* Trakt
* MDBList
* CrossWatch
* PunchPlay
* Floppy
* Scrob

Collection targets include:

* Trakt
* MDBList
* CrossWatch
* PunchPlay
* Floppy
* Scrob

Media servers are source-only for Collection sync.

### Recommended setup

Start with **Add / Update** enabled and **Remove** disabled.

Check the first sync result. Enable **Remove** only when target removals should follow source deletions.

### Related

* Overview of feature choices and patterns: [Features](/crosswatch/settings/configure-pairs/features.md)
* Pair-level feature toggles and safety: [Configure Pairs](/crosswatch/settings/configure-pairs.md)


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