AUDIT REPORT | The majority of undocumented migrants deported between 2014 and 2016 are missing from the Immigration Department blacklist, the first series of the 2016 Auditor-General's Report revealed.

The department deported 179,364 undocumented migrants during the period, of which 155,813 were not flagged on the Immigration Department's "myIMMs" system.

"(Migrants) that have been deported are still not blacklisted in the myIMMs. They were not included in the suspects list," the report read.