Partial reading in a txt file

Hello,
i am using the file node in order to read a text file containing values separated by a comma, example:
"198,50,20,NA,200,75,89,NA"

It works well but i've got only a partial result... it doesn't return me the totallity of the data, some are missing, and at the end i've got something like this: , "532,557,82..." <ith 3 points the end is missing

the node connfigration & result:

The debug node doesnt show everything (only a portion)

The data IS there.

To prove it, write the payload another file or set the debug node to send the payload to the system console