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…ue (#7050) ## Problem In the parachain template we use the [fully verifying import queue ](https://github.com/paritytech/polkadot-sdk/blob/3d9eddbeb262277c79f2b93b9efb5af95a3a35a8/cumulus/client/consensus/aura/src/equivocation_import_queue.rs#L224-L224) which does extra equivocation checks. However, when we import a warp synced block with state, we don't set a fork choice, leading to an incomplete block import pipeline and error here: https://github.com/paritytech/polkadot-sdk/blob/3d9eddbeb262277c79f2b93b9efb5af95a3a35a8/substrate/client/service/src/client/client.rs#L488-L488 This renders warp sync useless for chains using this import queue. ## Fix The fix is to always import a block with state as best block, as we already do in the normal Aura Verifier. In a follow up we should also take another look into unifying the usage of the different import queues. fixes paritytech/project-mythical#256 --------- Co-authored-by: command-bot <> (cherry picked from commit 1dcff3d)
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