Yes, all newer versions of SMSQL use PowerShell cmdlet, smsqlbi.exe is gone. If you have existing scheduled backup jobs, under SMSQL installation directory, run SMSQLUpgradeJobs.exe, you should be able to use that tool to convert/upgrade smsqlbi.exe job to new backup job.
It may be easier to just recreate backup job from new SMSQL GUI.
Thanks,
-Qing