In the case of a force close, we can use the command lncli wallet bumpclosefee to create a CPFP transaction that spends the outputs of our channel closure transaction. You will only be able to make use of this command if it was created as an anchor channel. To run the command successfully, you will need to specify the channel point of the channel that is being force closed.
I'm using start 9 with CLN.
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Thank you for this pointer.
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