I went as described with all my papers to the Traffic Branch last week to change my UK Licence to Mauritius Drivers Permit and it was rejected for two reasons
[1] I needed a photocopy of the page in the passport where I last entered Mauritius.
[2] I needed an Attested(apostile) copy of my driving licence which means the Green paper copy.
I am not sure if these are recent changes to the regulations on this matter or that some officers decide that they want more information than others