Currently concourse does not support moving pipelines between teams via fly CLI. There is an issue for that here
The only way to do this is to make a few changes in the DB.
If you run the statement below you will see that 6 tables have the team_id column.
concourse=> select table_name from INFORMATION_SCHEMA.COLUMNS where column_name = 'team_id';;
from INFORMATION_SCHEMA.COLUMNS
where column_name = 'team_id';
If you describe the tables \d+ pipelines you can see the column is present.
Run a quick select * from pipelines limit 5 to examine what the data is like.
If you do this for the rest of the tables, it becomes apparant that the only tables you need to edit are pipelines, and builds.
This will move your pipeline definitions and your historic builds over correctly, and everything will carry on working.
If you want to move all your pipelines from team main to team new (lets say it has an id of 3) you would just run the following statements:
begin;
update pipelines set team_id = 3 where team_id = 1;
update builds set team_id = 3 where team_id = 1;
commit;
This will move all of your pipelines that belong to team 1 to team 3.
begin;
update pipelines set team_id = 3 where name ~ 'analytic';
update builds set team_id = 3 where pipeline_id in (select id from pipelines where name ~ 'analytic');
commit;
This will move all of your pipelines with analytics in their name to team 3