How to prevent former employees submissions?

Hello,

I have a scenario where if we have an employee leaves and they know the URL to the internal form we created... is there a way to keep the form + submissions intact but just change out the URL without cloning the form and starting over?

On Integration's... I want to prevent from having 2-3 google spreadsheets because I've had to clone a form a few times to ensure security of the form being submitted. 

Thanks for your time!

This guide will help you to create a form that can only be filled in by those having a special link. 

https://www.jotform.com/help/306-Allow-jotform-to-be-filled-out-only-by-those-with-a-special-link 

In case of an employee leaving you can change the values.

Another alternative might be cloning the existing form and then importing submissions to prevent several spreadsheets with submissions:

http://apps.jotform.com/app/import_data 

After importing submissions you can disable the first form to avoid future submissions:

Let us know if we can assist you further.