Define a template with the specific measurements that are to be included in documents of 
Type = KCI (Key Characteristics Inspection). 

When you create a measurement document (MSR) for the first serial number, one will automatically get a measurement document of  Type = FAI (First Article Inspection).  
On this document all measurement values from the template are included. 

For the next serial number, a measurement document of Type = KCI (Key Characteristics Inspection) is automatically created, where only the measurement values that are defined in the template are included. 

On any one of the measurement documents that are created as Type=KCI (Key Characteristics Inspection), 
one can choose type = FAI (First Article Inspection) before filling in the measurements and all the measurement values will be included on this document.