Hello Aneeshyg,
The CA Endevor SCM Best Practices Implementation should be a great starting point for you - as you look to gather relevant software change information in preparation for your migration. As a CA Endevor SCM customer, you should have access to this guide. If you are looking for further details and guidance, please send a direct email to Rose.Sakach@ca.com and we'll work together to get you what you need.
Thanks for posting your questions and best of luck! We're glad to have you with us!