Adding new attribute to existing changes only extract

Summary:

Adding new attribute to existing changes only extract leads to full volume run

Content (please ensure you mask any confidential information):

Hi Team,

Greetings!

We have an existing changes only extract which keeps extracting the daily data changes and writes them into the file, which is sent over the destination.

There is a need to add a new attribute (Seniority Date) to the existing extract.

What are the key steps to be handled when we move the change to Production?

We had observed in the past that addition of the new attribute ends up the first run in production to generate full file post deployment , even when the same set of input parameters used?