Unable to Add r Tag

Nice to meet you. ``` { "kind": 9002, "content": "", "tags": [ ["d", "uuid"], ["name", "TestGroup"], ["picture", "https://test.com/test.png"], ["about", "NIP29 Group for Test"], ["public"], ["open"], ["r", "https://example.com"] ] } ``` When sending a request to create a group, adding an r tag and editing the group does not reflect the addition of the r tag. The metadata response for a group using kind 39000 is shown below. ``` { "kind": 39000, "content": "", "tags": [ ["d", "uuid"], ["name", "TestGroup"], ["picture", "https://test.com/test.png"], ["about", "NIP29 Group for Test"], ["public"], ["open"] ] } ``` Once the addition of the r tag is realized, it could be used, for example, to set up a fixed online meeting link.