Hello,
I have a Jira service desk in a Jira Server and I want to migrate it to a cloud site. When I go to the migration cloud site shown in the first image 
go to migration dashboard and try to create a migration. I am unable to select a destination site as shown in this image

I have checked that the user is in the admin groups. I have also tried to install Jira Cloud Migration Assistant app in the cloud site but it does not appear and it seems it is not available for cloud or it is pre-installed. Any solution to perform the migration?
Thank you in advance.