Hello! I hope you can help me, I would like to know if it is possible to import/export a complete issue from a ojs to another along with its statistics. Thanks!
Not with its statistics, no. You can use the Native Import/Export plugin to move a published issue into another OJS installation (provided it is the same OJS version, you cannot use this to upgrade or downgrade). The exported content doesn’t include stats though. This is primarily because the imported content will have new database ids for submissions, files, and galleys.