Returning colleagues previous new hire training showing as complete

I have a 'new starter' that previously worked at the organisation, now they are returning four years later, the 'new hire' specialisation is not being triggered to reassign the specialisation - instead it is just showing as complete based on their previous completion. I have seen this working correctly for other returning colleagues so am unsure what has changed or how to resolve this going forward.

Any help or guidance would be hugely appreciated.