How to update the contact lists of an email address in the Send grid?

I'm utilizing the SendGrid API to manage contacts and their associated contact lists. Referring to the documentation here, I initially created an email address and assigned it to Contact Lists (XXXXX, YYYYY) using the following request:

curl -X PUT "https://api.sendgrid.com/v3/marketing/contacts" \
--header "Authorization: Bearer <<YOUR_API_KEY_HERE>>" \
--header "Content-Type: application/json" \
--data '{"list_ids":["057204d4-755b-4364-a0d1-XXXXXX", "057204d4-755b-4364-a0d1-YYYYY"], "contacts": [{"email": "annahamilton@example.org"}]}'

Now, I want to update the contact's associated Contact List to another one (ZZZZZ) using the same request. So, I issued the following command:

curl -X PUT "https://api.sendgrid.com/v3/marketing/contacts" \
--header "Authorization: Bearer <<YOUR_API_KEY_HERE>>" \
--header "Content-Type: application/json" \
--data '{"list_ids":["057204d4-755b-4364-a0d1-ZZZZZ"], "contacts": [{"email": "annahamilton@example.org"}]}'

However, upon searching for the email address using the following request:

curl -X POST "https://api.sendgrid.com/v3/marketing/contacts/search/emails" \
--header "Authorization: Bearer <<YOUR_API_KEY_HERE>>" \
--header "Content-Type: application/json" \
--data '{"emails": ["annahamilton@example.org"]}'

I noticed that the email address's contact list was not updated to ZZZZ; instead, all three lists are still present:

{
    "result": {
        "annahamilton@example.org": {
            "contact": {
                ...........
                "email": "annahamilton@example.org",
                "list_ids": [
                    "057204d4-755b-4364-a0d1-XXXXXX",
                    "057204d4-755b-4364-a0d1-YYYYYY",
                    "057204d4-755b-4364-a0d1-ZZZZZZ"
                ],
               ..........
            }
        }
    }
}

Could someone please guide me on how to properly update the Contact Lists associated with an email address?

Solution

I noticed that the email address's contact list was not updated to ZZZZ; instead, all three lists are still present

That was to be expected - https://docs.sendgrid.com/api-reference/contacts/add-or-update-a-contact#body says,

list_ids- array[string] - An array of List ID strings that this contact will be added to.

Doesn't say there that the contact will get removed from other lists they are already on.

To remove a contact from a list, you need to go via the lists endpoint, /v3/marketing/lists/{id}/contacts to be specific. You need to make a DELETE request, and pass a parameter contact_ids containing the comma-separated contact IDs you want to remove from the list.

https://docs.sendgrid.com/api-reference/lists/remove-contacts-from-a-list