Label transfer after Integration using ArchR

[VDD58]

Hello,
I am trying integrate 10x scATAC with sc SMART-seq2 data set using ArchR.
I noticed that depending on the groupRNA I choose to integrate (differentiation state, treatment etc), the predictedScore changes. I was wondering if the label transfer is performed on a singe cell basis (aka a single ATAC cell regardless of the RNAgroup parameter, is linked to the same scRNA cell and therefore receives it's label? if that is so, can i select more features form the RNA metadata and add them to the ArchR project?
Thank you