Sometimes learners may become unenrolled in a course they had previously completed or made progress in and it may be important to restore these user's grades. Depending on which enrolment method they were enrolled using there are different scenarios that can occur.
Enrolment method
First it's a good idea to understand exactly why and how the user became unenrolled. Was this as result of a change made by a trainer/administrator or did the learner unenrol themselves. ? Once you know which enrolment method these users had been enrolled using before they were unenrolled you can then decide how to reinstate their enrolment.
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To avoid removing a user's grades during unenol in future I'd recommend that this should be set future you may wan to consider changing the external unenrol action to:
Disable course enrolment and remove roles – this means the learner is not able to enrol themselves in the course. If the learner is re enrolled through the audience their course grades, settings and record of learning is restored. This setting should be used when the learner’s previous course grades are required to be kept.
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