After you are satisfied with the exposure and testing a build has received in a release channel, you can copy the build to another release channel to expose it to a new set of testers or users.
Only build versions with higher version numbers can be copied over lower version builds. So, if there is already a build inside a release channel, you cannot replace that channel’s build with an older version. The build version numbers are indicated on the Build Dashboard.
To copy a build to another release channel:
Select the destination channel and then click Copy.
The build is copied to the new channel and is made available to all subscribed users as an update.