Mr. Grun,
Based on the suggestion, I tried both of them.
1) 'field-delimiter': '\t' is erroring out [csv:parse] The value of 'field-delimiter' is not a single character: '\t'.
2) 'field-delimiter': '	' is working.
IMHO, it is better to keep the 'tab' parameter like it was before.
Regards, Yitzhak Khabinsky