Import from connector failed with reason User Not Found. User: None

Hi is there any guidance on what this error means? I'm getting it on imports on a powershell connector. I assumed that it meant it's trying to commit an entity that's missing some attribute but the code seems to be correct. Snippet and error follow.

Only ID is a required attribute.

Relevant part of import.ps1

if ($msoluser.ImmutableID)

{

## Create or update IdB entity

$entity = $entities.Create()

$entity['ID'] = $msoluser.ImmutableID

$entity['UPN'] = $msoluser.UserPrincipalName

$entity['isLicensed'] = $msoluser.isLicensed

$entity['Alumni'] = $Alumni

$entity['UserStatus'] = $UserStatus

$entity['CheckLicense'] = $CheckLicense

$entity.Commit()

}

Error in IDB logs:

Import changes from connector Office 365 Student Connector failed with reason User Not Found.  User: none.. Duration: 00:45:45.8101253
Error details:
Microsoft.Online.Administration.Automation.MicrosoftOnlineException: User Not Found.  User: none.
   at Unify.Product.IdentityBroker.PowerShellConnector.d__30.MoveNext()
   at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()
   at Unify.Framework.Collections.ActionOnExceptionEnumerator`1.MoveNext()
   at Unify.Framework.Collections.EnumerableExtensions.d__10`1.MoveNext()
   at System.Linq.Buffer`1..ctor(IEnumerable`1 source)
   at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
   at Unify.Product.IdentityBroker.ChangeDetectionEntityPollJob.RunBase()
   at Unify.Framework.DefinedScopeJobAuditTrailJobDecorator.Run()
   at Unify.Product.IdentityBroker.ConnectorJobExecutor.<>c__DisplayClass33_0.b__0()
   at Unify.Framework.AsynchronousJobExecutor.PerformJobCallback(Object state)",Normal