template binary sensor ignoring unique_id field

[kind pike]

I changed my template sensor to a binary sensor with the same unique ID, and now HA is ignoring my unique ID and creating a new ID every time based on the name. How do I purge these old entities?

[hallow cedar]

It won't do that if you provide unique_id to the binary_sensor. Post your yaml because it's likely not correct.

[prime lark]

The unique id is only used for the entity id in case no name is provided. In that case it uses the unique_id prefixed with template_

In case a name is provided, the slugified version of the name is used for the entity id

[thorny pumice]

It also allows the UI editing.