Hi, Sascha.
 
My understanding is that CONN does not "scrub" data in the traditional sense.  What you are describing sounds like frame-wise displacement to correct for bad data points.  CONN, though use of ART detect, actually accounts for the bad data points and then includes those bad data point time courses and movement time courses as nuisance regressors during the denoising procedure.  Those bad data points via CONN processing are probably better described as being "censored" from the data as opposed to "scrubbed."  It is an important distinction because data is not being inserted or interpolated with CONN, which makes decisions about things like the maximal amount of total signal noise allowable important or the ratio of good to bad time points allowable for a subject. 
 
Hope this helps,
Jeff