Importing Active Directory Domain Users

Hello Mark Andersen ,

Thank you for reaching out to the community, please refer the following useful docs below that may help mitigate your situation: 
1.)  Import export - https://docs.sophos.com/nsg/sophos-firewall/19.0/Help/en-us/webhelp/onlinehelp/AdministratorHelp/BackupAndFirmware/ImportExport/index.html
2.)  Creating XML Objects with notepad++ for mass import - Creating XML Objects with notepad++ for mass import
3.)  Backup-restore compatibility check - https://support.sophos.com/support/s/article/KB-000036245?language=en_US

i saw these links before
1- both devices using same OS version and ....
2- users aren't inside XML file because users contain sensitive info, so i'm unable to edit xml file to achieve my requirements.
3- i'm using export and import, not Backup and restore.

On the virtual appliance is the same AD integration configured ?

after importing, the  active directory integration is added and visible on virtual appliance

Is the test connection successful ? And are the groups visible in the group section ?

Is the test connection successful ? And are the groups visible in the group section ?

yes test connection is successfull and all groups are imported