We need to move 500+ issues from one project to another. Documentation says https://www.jetbrains.com/help/youtrack/incloud/2018.1/Command-Reference.html#project-related-commands
Use the following commands to move issues to another project.
|Moves the selected issues to the specified project.
You can also enter the
<project name> as a single value.
But no one of this works - "unknown command" response for any of it.