I do apologize for not being more specific. You can certainly tell I am not used to posting.
I use a Palm IIIc with the Palm OS 4. I use Outlook for all of my tasks, meetings, and notes. The Someday/Maybe category was in the Outlook Tasks with individual annotations; i.e. Vacation - Australia, Vacation - Quebec; Movies to Rent - Dear to My Heart, Movies to Rent - Enchanted April; Garden - Landscaping; etc. One day they were all there, the next day they were all gone.
Did you have any problems hotsyncing before or thereafter, something similar happened to memo a while ago, I simply remove the .dat files of both the memo and todo and all was back to normal but that's why I ask if you had problems hotsyning, cuz that's how it started on my clie.