Unable to add back node which was rebalanced out

[2019-10-14T23:29:55-07:00, sequoiatools/couchbase-cli:6.5:2fc1ad] server-add -c 172.23.108.103:8091 --server-add https://172.23.106.100 -u Administrator -p password --server-add-username Administrator --server-add-password password --services data

[2019-10-14T23:30:10-07:00, sequoiatools/couchbase-cli:6.5:213ce0] rebalance -c 172.23.108.103:8091 --server-remove 172.23.98.135 -u Administrator -p password

[2019-10-14T23:37:56-07:00, sequoiatools/cmd:7189ca] 60

160023:[user:info,2019-10-14T23:30:12.305-07:00,ns_1@172.23.108.103:<0.10652.0>:ns_orchestrator:idle:828]Starting rebalance, KeepNodes = ['ns_1@172.23.104.156','ns_1@172.23.104.164',

                             'ns_1@172.23.104.5','ns_1@172.23.104.61',

                        'ns_1@172.23.104.67','ns_1@172.23.104.69',

                                'ns_1@172.23.104.70','ns_1@172.23.104.87',

                               'ns_1@172.23.104.88','ns_1@172.23.106.100',

                               'ns_1@172.23.106.188','ns_1@172.23.108.103',

                               'ns_1@172.23.96.148','ns_1@172.23.96.251',

                             'ns_1@172.23.96.252','ns_1@172.23.96.253',

                              'ns_1@172.23.96.95','ns_1@172.23.97.119',

                            'ns_1@172.23.97.121','ns_1@172.23.97.122',

                            'ns_1@172.23.97.239','ns_1@172.23.97.242',

                                 'ns_1@172.23.99.11','ns_1@172.23.99.20',

                                'ns_1@172.23.99.21','ns_1@172.23.99.25'], EjectNodes = ['ns_1@172.23.98.135'], Failed over and being ejected nodes = []; no delta recovery nodes; Operation Id = 5841804a715ebcac0a55e92c5d7be282 

[user:info,2019-10-14T23:37:47.494-07:00,ns_1@172.23.108.103:<0.10652.0>:ns_orchestrator:log_rebalance_completion:1466]Rebalance completed successfully.

Rebalance Operation Id = 5841804a715ebcac0a55e92c5d7be282 

[2019-10-14T23:44:29-07:00, sequoiatools/couchbase-cli:6.5:5b3b76] server-add -c 172.23.108.103:8091 --server-add https://172.23.98.135 -u Administrator -p password --server-add-username Administrator --server-add-password password --services eventing

→  

Error occurred on container - sequoiatools/couchbase-cli:6.5:[server-add -c 172.23.108.103:8091 --server-add https://172.23.98.135 -u Administrator -p password --server-add-username Administrator --server-add-password password --services eventing]

docker logs 5b3b76

docker start 5b3b76

=ERROR: Prepare join failed. Node is already part of cluster.

[2019-10-14T23:44:38-07:00, sequoiatools/couchbase-cli:6.5:701f5a] rebalance -c 172.23.108.103:8091 -u Administrator -p password

[2019-10-14T23:45:38-07:00, sequoiatools/cmd:846e63] 60