Technician Name from Sm8 to Zoho CRM

Hi we have an account where we have an API that works between zoho CRM and ServiceM8 and we have a 2 way synch of data. We have one tasks that updates the CRM with jobs completed based on job number and it also updates the technician who completed the job, this used to work however the technician name is no longer updating in the CRM can you please look into this as the developer believes this issue is on your end?

Thank you