Sometimes when you retrieve an object via PowerShell, some of the properties are truncated, denoted by an ellipsis (“…”).
For example:
Get-Mailbox chris | Select AddressListMembership
AddressListMembership
---------------------
{\Staff Global Address List, \Staff, \IT Staff, \Exchange Admins...}
How do you see the full list? There are a couple ways:
Select -ExpandProperty
Get-Mailbox chris | Select -ExpandProperty AddressListMembership
$FormatEnumerationLimit =-1
This is a per-session variable in PowerShell. By default the value is 4, but if you change it to -1 it will enumerate all items. This will affect every property of every object, so it may be more than you need.