API to reactivate the terminated assignment record

Hi,

We only have HR Foundation installed and there is a need to reactivate a terminated secondary assignment for an employee. Is there an API to reactivate a terminated secondary assignments on the same assignment_id? Currently I am deleting these terminated secondary assignment records (using hr_assignment_api.delete_assignment API) and recreating the secondary assignment but his creates secondary assignment with a new assignment_id. I have tried to use "HR_ASSIGNMENT_API.update_emp_asg" and "HR_ASSIGNMENT_API.update_emp_asg_criteria" APIs to reactivate the terminated secondary assignment but I do not think these are working. Any guidance on which API and parameters to use will be really helpful.