I have come across a strange issue. Clarity 12.1.3 on SQL server. I am using a GEL script to read existing rate matrix values into a query, parse the output into a XOG file and write it back as a new matrix. All straightforward stuff and my script is completing fine. However I have noticed that one of the column values - Project Class - in the new matrix is always null even though my query shows values for it and it's in the write file. Any reasons for this?
The query is
This gives results like
The XOG write is
But the output doesn't show Project_Class in the <matrixRow> segment: