🇺🇸United States @trustypelletgun

I second Ted's question in #14: why not run \Drupal::keyValue('update_fetch_task')->deleteAll(); when Update Manager is uninstalled? I'm seeing this issue when using Config Split to only enable Update Manger in the dev environment. Stale update_fetch_task keys are preventing future update checks and the only remedy is to manually remove them from the database.

Editing to clarify the situation I'm describing:
Setup: Update Manager disabled in production.
Scenario: When a database export from production is copied to a different environment and then Update Manager is enabled, updates cannot be retrieved unless the stale update_fetch_task keys are manually removed from the database.