I think that once you are released from caring for a particular patient, there is no real need to go back into their records to further monitor them. If there is a situation where you have to do a late entry in the chart, however, you may come across some information that was not previously known to you...so, in that case, it can be sticky, but there was a reason why you had to re-enter into that chart.
I remember once, in my clinic, I drew blood from a patient and then, 4 hours later, I wondered if I used the right colored (and enough) tubes, because if not, some of the labs would not have returned. We have computerized charting, and I did re-enter because I wanted to just see if anything was rejected by the lab, and if so, I probably would have had to tell the doctor my mistake, and then, contact the patient to come in to have another sample drawn. It wound up okay, I used the correct colors and amounts, because the results were in (wasn't curious to know that, but my inquiry had given me access to information previously unknown to me).