Record Producer variable label change - How to preserve old question text for historical submissions

[akhil makineni1]

Hi Experts,

I have a Record Producer with a variable:

Question: What is your C Name?
Variable Name: c_name

Users have already submitted many records using this Record Producer.

Now the business wants to change the question label to:

What is Your Colleague Name?

My requirement is:

• Existing submitted records should continue displaying:   What is your C Name?

• New submissions should display: 

    What is Your Colleague Name?

I would like to know:

1. Does ServiceNow store the question label historically at submission time, or does it always reference the current variable definition?
2. Is there any OOTB mechanism to preserve the original variable label for previously submitted records?
3. What is the recommended approach-creating a new variable, storing question labels in a custom table, or another design pattern?

Any best-practice recommendations would be appreciated.