Not getting correct result from output of a write data node in process model

Question

I have a write data node in process, input is: 
 
 output is: 
 
 Process detail showing pv!originalRecords has value, but the result of update() somehow not saved to pv!updatedRecords 
 
 Can anyone advise what could be the cause?

Soma · Answer

Please check the process history to verify if the process variable is getting reset anywhere else in the process