IMHO an old report is still good if it has useful information. So if it is a HG from 3 months ago, and she hasn't been back in that time, and you aren't adding information about the process or something unusual, then it isn't worth it.
But an old report about a place on the mainland or in Macau will still help someone who searches for that location or area.
The old D1 is kind of different. This would just be a nastalgia report since it wouldn't be useful anymore. I don't know... I'd probably read it anyway and throw a couple of K his way.