ConvertToString partial template shown

I’m having a weird problem with convertToString.
I have my record mapped to Values and my template mapped to EDITemplate which should produce the following
10 data data data…
20 data data data …
20 data data data …

The weird thing is the middle part of record 10 is missing in the output string from convertToString even though the data exist in the input record.
Yes I have checked the template but will triple check again.

Any ideas?



Any ideas? The template has been checked and rechecked.