This function is useful when comparing inferred communications across different datasets with different cellular compositions
liftCellChat(object, group.new = NULL)A single or merged CellChat object
A char vector giving the cell labels to lift up. The order of cell labels in the vector will be used for setting the new cell identity.
If the input is a merged CellChat object and group.new = NULL, it will use the cell labels from one dataset with the maximum number of cell groups
If the input is a single CellChat object, `group.new` must be defined.
a updated CellChat object