All the values are getting set, tried the debugger. But the line is not committed.

are you getting any error? maybe the line field it’s getting recalculated after your commit

But it isn't committed and the line is over-written by the next element in the loop

try to wrap the code in a try and catch try{ }catch(e){nlapiLogExecution('DEBUG', 'try.error', JSON.stringify(e))}

Code is already in try catch.