Help Agenda doesn't show events for all calendars

[NotPortlyNJ]

My Samsung Moment all of a sudden stopped showing one of my 2 calendars in agenda, day or week mode. I see events in the Month view, but can not view details. I tried clearing the calendar data via Settings / Manage Applications / Calendar Data, but to no avail. Both calendars are selected in Settings / My Calendars. Anyone have any idea?

 

[NotPortlyNJ]

It gets worse. I only see events for my main calendar for May in month view. Other months have nothing.

 

[NotPortlyNJ]

OK, I discovered that I can resolve this by exporting my calendar in Google, then creating a new calendar, importing those events, and setting my old calendar as not shown.