When copying an issue with the "release" field set from a project using the backlog plugin to a project also using the backlog plugin but without this "release" defined, the new issue keeps the original "release" field set to a release value from the former project.
This is irrelevant. If the destination project has not this release defined, the copied issue should have its release field set to none.
When copying an issue with the "release" field set from a project using the backlog plugin to a project also using the backlog plugin but without this "release" defined, the new issue keeps the original "release" field set to a release value from the former project.
This is irrelevant. If the destination project has not this release defined, the copied issue should have its release field set to none.