I recently migrated our projects from the server to the cloud. After the migration, I noticed that about 1/3 of the migrated projects have at least 2 issues missing in the Cloud version. I initially though this was done with permissions, but I am an Administrator for the project with the highest number of missing issues.
Also, is there a limitation on the Jira Cloud free plan migration compared to standard or premium. If yes, what is specifically restricted to the free version?