Using PSE9, Windows 7 Pro, 64-bit.
I just changed the dates on 2 of my photos and noticed that the 2 pictures do not re-order themselves in the correct date sequence.
The 2 photos are dated Oct 14, 1983. However they appear between my Oct 16 and Oct 15 photos. I have other photos dated Oct 14 that do correctly appear before the Oct 15 photos.
Why would these 2 photos be separated from the other Oct 14 photos?
Perhaps you need to close the program and then restart it for Organizer to refresh itself correctly. Sometimes reboot is also required so I suggest restart your machine and then see what happens.
Good luck and post back.
I did a View>Refresh several times after I made the date change and it did not do anything to correct the problem.
I also closed PSE and re-started it and the 2 pictures are still not in the correct date sequence.