Let's say I broadcast a transaction
tx0 signaling RBF replaceability. Later on, send another transaction
tx1 that spends the same inputs of
tx0, but this time with higher fees.
In this case, tx0 is removed from mempool right? so what if then I try to send a child transaction
tx0child that forms a more profitable CPFP than
tx1 alone? But without the context of removed parent (
tx0) this CPFP cannot work then, although it's more profitable?