Add external contacts from GAL to Offline address book

We have a requirement of adding an trusted forest (xyz.com) as contacts and sync them to O365 cloud. We can see them in the GAL but is there any way we can structure the OAB and make them visible as xyz contacts so that our users can check the oab for xyz contacs.
o365AdmAsked:
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FOXActive Directory/Exchange EngineerCommented:
FOXActive Directory/Exchange EngineerCommented:
You may have to do an export of those users in the other domain to a .csv file containing the pertinent information to be imported using the below method

o365admin the below will get your outside contacts pulled in bulk via powershell.

http://www.infinitconsulting.com/2015/01/bulk-import-contacts-to-office-365/

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o365AdmAuthor Commented:
Thank you Foxluv.
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