The reference dot walk field update on incident should not copy data unto actual record

[Yashaswini]

Hi,

I have a incident table and problem field on incident table. I dot walk from the problem field and bring the problem statement on the incident table.

Here, when I update problem statement on the incident form, it's updating problem statement on the actual problem records which is selected on Incident record.

I understand that it's OOB behavior. 

Is there a way to prevent this and if I update problem statement on incident, it should not update on actual problem record.

Thanks in advance.

[Weird]

No. It doesn't make sense to show a reference record and showing different info on one record.
What you'll need to do is create a new field which will be a copy of the referenced field.
You just copy the data from your problem statement to the new field and you'll be free to customize the content without affecting the original content.