A transcript is a summary of a student's performance over an academic career.
A transcript is created by taking a snapshot of report cards on the date it is created, and converting grades into grade points, and hours into credits.
Grades are converted into grade points using their grading scale.
Hours are converted to credits using the rate established when the transcript is created. This cannot be edited after creation.
Transcripts have Snapshots
Transcripts show a snapshot of a student at a given time - they are not updated unless the user clicks the Reimport Credits button on a period.