Breaking change

Proposed change

A remote Bluetooth scanner config entry, such as one for an ESPHome Bluetooth proxy, stores the id of its source device to link the scanner's device to it. For entries created before the device registry split composite devices into one device per config entry, that stored id is now a pre-migration composite device id. Passing it as via_device_id logs "Detected that integration 'bluetooth' passes the id of a pre-migration composite device ... This will stop working in Home Assistant 2027.8".

A stored composite device id is now resolved to the split device that belongs to the config entry providing the scanner, the same lookup search and tag triggers use for composite device ids.

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Deprecation (breaking change to happen in the future)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes Detected that integration 'bluetooth' passes the id of a pre-migration composite device #178087
• This PR is related to issue:
• Link to documentation pull request:
• Link to developer documentation pull request:
• Link to frontend pull request:

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