The reports for SCOs display identical dates/times for First Access and Last Access when accesed from users profile activity reports regardless of data stored.

The logic for First A ccess of a sco is based on finding the earliest time of a all elemts modified, but this is not an acurrate result as each time a data is written to a field the timemodified is updated. Therefore if a Course has one SCO and only writes to the fields of total_time, score_raw, lesson_status, lesson_location, suspend_data, these fields may be updated several times while the sco is being viewed.

I recommend adding an additional field for storing the first access date.