That is a good question. I have assumed that the comments are stored in the AC database somewhere.
I previously asked about whether there was a way to print a log of these comments other than accessing them one at a time with each item. No one replied, so maybe we don't know how it works. Perhaps we have to ask the Angels.
So, since I have been unsure where the comments are in the permanent record, I don't use the comments, but actually create a message for any important actions generated by review of an item. That way, I have a record in the prior encounters.
