Good afternoon EightWheels2,
Welcome to the Apple Support Communities!
It sounds like you are having an issue adding and removing contacts from a list in the Contacts app on your Mac, and we'd like to help.
Can you provide a little more information about what you are experiencing?
- How long has this been going on?
- Are your contacts stored in iCloud, or in email accounts, or both?
- Do you use Microsoft Exchange to manage Contacts?
- If your contacts are all in iCloud, have you tried managing lists on the iCloud.com website?
- Have you updated to macOS 13.2.1?
- Do you have a Time Machine backup of your Mac and an archive of your contacts? We highly recommend this before making major changes to your Contacts data.
Your responses to these questions will help us understand the issue better and work towards a resolution with you.
The resources below may help you address this issue:
Export or archive contacts in Contacts on Mac - Contacts User Guide
Archive or make copies of the information you store in iCloud
Create and change lists in Contacts on Mac - Contacts User Guide
Edit the distribution list for lists and Smart Lists in Contacts on Mac - Contacts User Guide
Create and manage groups of contacts on iCloud.com - iCloud User Guide
If the issue persists after reviewing these resources and trying the suggested steps, please reply to this thread and we'll do our best to help you!
Take care.
