I made only very modest efforts to save matches < 8 cM (filtering on common ancestor, etc.). However, I made a list of a few matches with 2 segments, where one of the segments must logically be < 8 cM (e.g. 13 cm total across 2 segments). The ones I listed (just a sample, mind you) still show the same total cM after the purge. From the white paper, it sounded like short segments would be discarded early in the process, but that doesn't appear to be the case.