RT 4.4.x REST 2.0 Tickets & Assets

Hi,
Converting over our REST 1.0 to REST 2.0. It’s quite nice. However I’ve run into an issue

curl -X POST -H “Content-Type: application/json” -u ‘:’ -d ‘{ “Queue”: “General”, “Subject”: “Rest-Test all”, “Content”: “Testing a create”,
“Owner”: “smelendy@umw.edu”, “Starts”: “2019-4-27 00:00:00”, “Due”: “2019-05-22 00:00:00”, “Due”: “2019-05-22 00:00:00”, “Refers to”: “Asset:302” }’ ‘http://localhost/REST/2.0/ticket

Will not add the asset to the ticket

Nor does updating the object:
curl -X PUT -H “Content-Type: application/json” -u ‘:’ -d ‘{ “Subject”: “Update test”, “Refers to”: “Asset:302”}’ ‘http://localhost/REST/2.0/ticket/4639

Has anyone else ran into this? Is there a different way?

Regards,

Shaun

Also Tried:
curl -X PUT -H “Content-Type: application/json” -u ‘user:password’ -d ‘{ “Subject”: "Update test 4 ", “Refers to”: “Asset:302”}’ ‘http://localhost/REST/2.0/ticket/4639/links
{“message”:“Not Found”}.

Regards,

Shaun