ACT child protection authorities do not know the day-to-day whereabouts of some of the children in their care, according to the territory's Auditor-General.

Although the latest report into the system by Auditor General Maxine Cooper acknowledged that the embattled care network was improving, the audit found that children placed in long-term care might never receive a visit from a care and protection worker and that monitoring of out-of-home care was poor.

The AG was particularly concerned that top Community Services Directorate officials could not rely on their own systems to tell them where