Here is my understanding of bring forward date(s):
All of us have an annual bring forward date which is one year to the date we received sponsorship approval. At that time, if your application has not been finalized, a visa officer will pull your file and review it and see what is outstanding. It's a follow up reminder date for your file to be looked at again.
Also, there are bring forward dates on your Admissibilities i.e. Security, Criminality, Medical, etc. which are found in your GCMS notes.
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