Rename object heading wonkiness

I have come across a strange issue with trying to rename items in an object (hope I am referring to this correctly).  I am working with a custom ePO module (McAfee ePolicy Orchestrator) and was trying to change the name of a query result.

import-module "C:\Windows\System32\WindowsPowerShell\v1.0\Modules\ePOwerShell\ePOwerShell.psd1"
Connect-epoServer -Server Chapdappepo01 -port 8181 -Credential $cred -ignoreSSL
$test = Invoke-epoQuery -ID 117 | Where{$_.State -ne 0}

#$test | Select-object @{expression={$_.Nodename};label='system'},lastupdate,Version,Username,NewDetection,@{expression={$_.EPOBranchNode.NodeName};label='bLAH'}  | Export-Csv .\test12345.csv -NoTypeInformation
#$test | Select-object @{expression={$_.Nodename};label='system'},lastupdate,Version,Username,NewDetection,@{expression={$_.EPOBranchNode.NodeName};Name="bLAH"}  | Export-Csv .\test12345.csv -NoTypeInformation
$test | Select-object @{expression={$_.Nodename};label='system'},lastupdate,Version,Username,NewDetection,EPOBranchNode.NodeName  | Export-Csv .\test12345.csv -NoTypeInformation

The first change works.   I am successfully able to get NodeName to System

system                 : 764PK292T5
LastUpdate                      : 6/3/2015 3:29:14 PM
Version                             : 7.0.2.396
UserName                         : paden
NewDetection                   : False
EPOBranchNode.NodeName : Lenovo - ThinkPads

But, when i try to rename the EPOBranceNode.NodeName I get nothing:

system                 : 764PK292T5
LastUpdate                      : 6/3/2015 3:29:14 PM
Version                             : 7.0.2.396
UserName                         : paden
NewDetection                   : False
bLAH :

The other strange thing is if I just do $test.EPOBranceNode.NodeName I get nothing while $test.Username gives me all the usernames found.

even doing this doesn't return anything:

$TEST | % {$_.EPOBranchNode.NodeName}

while $TEST | % {$_.username} does

What am I missing?