ElementsProject / ElementsProject/lightning

Recover out of band channel opening fee bump?

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Description

I'm assuming the answer is "no" in which case this can be closed, but is there anything in any toolset or script that can be ran to recover funds under this scenario?

1. User inititates channel open from LDK to CLN
2. Fee was too low
3. User does a fee bump OUT OF BAND with sparrow to the same 2 of 2 opening address
4. Transaction confirms, but with a different transaction ID
5. Neither node is aware of this
6. User "closes" the channel it was aware of because it never opened, funds never return
7. Neither LDK nor CLN are aware of the new transaction ID or channel as a result of the new funding id.

The closest I see that might be able to help is this: https://docs.corelightning.org/reference/lightning-makesecret but it starts to get really risky dealing with private keys manually. Essentially is there a way on the CLN side to manually spend / sign a partial psbt from one of these 2 of 2 funding addresses?

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