Should on premise users be able to see capacity column in GAL for Room mailboxes in O365.

I have a hybrid O365 implementation started.  I have about 25 Room mailboxes that were created in Exchange 2010 SP3 (on premise).  I migrated 3 of them to O365.  They seem to work, but when on premise users go to their Address Book in Outlook and drop down to All Rooms, the Capacity column is empty for those 3 mailboxes.  They can see the correct capacity for the mailboxes still on premise, just not the O365 room mailboxes.  O365 users can see the correct capacity for all room mailboxes regardless of location.  All other columns for All Rooms have data in them, just the capacity column is affected.  Is this expected behavior?  

thanks,
Johnny
jdholstonAsked:
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Vasil Michev (MVP)Commented:
What's the value of MsExchResourceCapacity for one of the migrated ones?
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jdholstonAuthor Commented:
That value is <not set> for all three of them in AD.  Once i populated that attribute and forced replication, then the on premise user can see that value in the address book.  Is that something that should be replicated or just something i will have to remember to do until everyone gets up to the cloud?
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Vasil Michev (MVP)Commented:
MsExchResourceCapacity is a mailbox parameter, and moving the mailbox to EO results in converting it and stripping the attribute from the remaining object on-prem. Those are two different orgs, remember, and unified GAL doesnt mean that you have 1:1 correspondence between the objects on-prem and in EO. Don't have a test hybrid to repro it atm, so I might be wrong on some of the points, but that should be the general idea.

You're not supposed to have rooms in both places anyway :)
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jdholstonAuthor Commented:
Ok, if we aren't supposed to have room mailboxes in both places, then how does someone who is a delegate of a room mailbox manage that resource if they are in the cloud?  I was told that if I migrate a user and they were a delegate for another resource then that resource also had to be moved or they would not be able to manage it.  That is why only 3 room mailboxes were migrated - one user is a delegate for those mailboxes.

Thanks,
Johnny
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