I never use the Keep existing CC, HPI, etc. But, if it defaults to a completely new encounter, then you aren't able to see the last encounter.
There are many times that you click on a patient in the patient list, and the, as Jon states, the most recent encounter, pops up. You want that. You want to be able to read the entire last encounter.
I find the only problem is that it is confusing to have the most recent encounter, which could be from a year ago, have today's date on top.
