Merge records into one row

Greetings,

I used FeatureJoiner to merge a Spatial and non-spatial records using a common value (grid_id).

I use a Tester to select a scenario ie date is 2000, 2030, 2040, etc.

I then use a StringConcaternator to add a value to a cell (overwrite cell value), the cell for 2000 will be 0 -5.

I also have a Tester for 2030 (2C), 2030 (4C), 2040 (2C), 2040 (4C), etc.

The records in the FeatureHolder, should all be written to a single row.

Instead I have a row per date/scenario??

For 2000 I have the following data.

The output is written over n rows, not a single row??

How do I append records into a single row??

Any suggestions are appreciated.

Thanks

Clive