Hey there, @amyk3448.
Thanks for reaching out to the Community. I'm happy to provide insight into your backup when an accountant copy has been sent.
You can still create local backups as normal. It won't affect the process or loose any data of the live file when the accountant's copy is sent out.
When creating a local backup, it records the live data of the file. Once you get the accountants copy back, you can create another backup to have a fresh copy of the live data with the changes made.
I'm including an article that covers accountants copy information that you may find beneficial below.
Please let me know if you have additional questions or concerns. I'll be here every step of the way. Feel free to reach out to the Community at any time. Take care and enjoy the rest of your day!