Bugfix: json-api: If a sample is reused the part (partition) variable needs to be set
Merge pull request #1380 from pietercvdm/hotfix/next

Bugfix: If a sample is reused the partition variable needs to be set
Don't update the due date for a test on an AR if the due date is already set.  The ERP may have explicitly set the due date based on manufacturing schedules and resource availability.