At a recent project when installing Horizon View with CPA i discovered a problem that manifested itself when SiteA was put into maintenance, certain users were unable to access desktops from SiteB.
After trawling through logs with support it was identified the CPA does not currently work with users that have been migrated and have data in the sIDHistory field. To verify this you can run the following powershell command:
Get-ADUser user1 -Property sIDHistory
New users without data in this field worked as expected.
VMware have indicated this is a major change in code that should be written in 2016 Quarter 2. I have not confirmed this is still a problem in Version 7 of View.
Watch this space for an update!