CC Receiver file last field of line truncated

Hi experts,

I have a cc receiver file with 3 structures defined in content conversion :

TOP, FAMILY, SUBFAMILY

And as content conversion parameters :

TOP.fieldfixedLengths     11,8,8,5

TOP.endSeparator     'nl'

FAMILY.fieldfixedLengths     6,3,40

FAMILY.endSeparator     'nl'

SUBFAMILY.fieldfixedLengths     6,3,3,40

SUBFAMILY.endSeparator     'nl'

the Last fields of FAMILY and SUBFAMILY structures are truncated in my final file, blanks are removed. However I can see the blanks in my payload.

In my final file I have this :

And I want this :

How can I keep the final blanks at the end of each line ?

Thanks