Interpretation of stats-dada2.qzv with regard to the denoised column

Hi!

I just had a query regarding the interpretation of stats-dada2.qzv with regard to the denoised column during denoise-paired in dada2.

I only have a very small proportion of reads lost here, but I just wanted to understand why they had gone, as they had obviously passed the filter step. Is it that an error had been detected but not been able to be resolved so it drops the read?

Many thanks

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