Exchange 2013 Migration Distribution Group Issue

I am currently in the middle of a migration from 2007 to 2013.  Both servers are co-existing.  I am moving the last of the mailboxes over to the 2013 server and have NOT yet migrated the Public Folders.  

I am NOT able to open/edit any distribution groups from within the 2013 EAC.  I can only open them via the 2007 Management Console.

What am I doing wrong?
BSModlinAsked:
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R--RCommented:
Distribution groups are AD objects. You should be able to open it from both the console.

any error message you receive?
check all the services on Exchange 2013.
check event viewer for any errors.
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BSModlinAuthor Commented:
This is the error in the Event viewer:

Log Name:      Application
Source:        MSExchange Control Panel
Date:          5/25/2015 8:33:07 AM
Event ID:      4
Task Category: General
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      RAMEXCHANGE.HPS.LOCAL
Description:
Current user: 'HPS.LOCAL/Users/admin'
Request for URL 'https://exchange.abc.local:444/ecp/UsersGroups/EditRoomMailbox.aspx?pwmcid=4&ReturnObjectType=1&id=0b0a9f36-ace3-4e23-abda-124d61c5cb08(https://exchange/ecp/UsersGroups/EditRoomMailbox.aspx?pwmcid=4&ReturnObjectType=1&id=0b0a9f36-ace3-4e23-abda-124d61c5cb08)' failed with the following error:
System.Web.HttpException (0x80004005): Request timed out.


Flight info: Features:[[Global.DistributedKeyManagement, False],[Global.GlobalCriminalCompliance, False],[Global.MultiTenancy, False],[Global.WindowsLiveID, False],[Eac.AllowMailboxArchiveOnlyMigration, True],[Eac.AllowRemoteOnboardingMovesOnly, False],[Eac.CmdletLogging, True],[Eac.CrossPremiseMigration, False],[Eac.DiscoveryPFSearch, False],[Eac.DlpFingerprint, False],[Eac.GeminiShell, False],[Eac.Office365DIcon, False],[Eac.UnlistedServices, False],],  Flights:[],  Constraints:[[mode, enterprise],[user, myriad@],[org, ],[loc, en-US],], IsGlobalSnapshot: False
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="MSExchange Control Panel" />
    <EventID Qualifiers="49152">4</EventID>
    <Level>2</Level>
    <Task>1</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2015-05-25T12:33:07.000000000Z" />
    <EventRecordID>37323</EventRecordID>
    <Channel>Application</Channel>
    <Computer>EXCHANGE.abc.LOCAL</Computer>
    <Security />
  </System>
  <EventData>
    <Data>HPS.LOCAL/Users/myriad</Data>
    <Data>https://exchange.abc.local:444/ecp/UsersGroups/EditRoomMailbox.aspx?pwmcid=4&ReturnObjectType=1&id=0b0a9f36-ace3-4e23-abda-124d61c5cb08(https://ramexchange/ecp/UsersGroups/EditRoomMailbox.aspx?pwmcid=4&ReturnObjectType=1&id=0b0a9f36-ace3-4e23-abda-124d61c5cb08)</Data>
    <Data>System.Web.HttpException (0x80004005): Request timed out.

</Data>
    <Data>Features:[[Global.DistributedKeyManagement, False],[Global.GlobalCriminalCompliance, False],[Global.MultiTenancy, False],[Global.WindowsLiveID, False],[Eac.AllowMailboxArchiveOnlyMigration, True],[Eac.AllowRemoteOnboardingMovesOnly, False],[Eac.CmdletLogging, True],[Eac.CrossPremiseMigration, False],[Eac.DiscoveryPFSearch, False],[Eac.DlpFingerprint, False],[Eac.GeminiShell, False],[Eac.Office365DIcon, False],[Eac.UnlistedServices, False],],  Flights:[],  Constraints:[[mode, enterprise],[user, myriad@],[org, ],[loc, en-US],], IsGlobalSnapshot: False</Data>
    <Data>ActivityId: </Data>
  </EventData>
</Event>
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BSModlinAuthor Commented:
Also, as a test I created a NEW Distribution Group on the new 2013 server.  It allowed me to create it, but will not let me open it to edit.
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BSModlinAuthor Commented:
This is the web page error when selecting to edit a group.....

Error
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AmitIT ArchitectCommented:
This looks more IIS issue. Can you run iisreset command or restart your exchange 2013 server. Also cross check it with this KB
http://blogs.technet.com/b/meamcs/archive/2013/07/25/part-1-step-by-step-exchange-2007-to-2013-migration.aspx
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BSModlinAuthor Commented:
I have restarted the server 2 times, installed CU7, and in addition the link above is the link I used for the migration.  I am able to log into ecp and edit everything EXCEPT distro groups.

I am able to edit the distro groups via powershell.

I agree with you.... It seems like an IIS issue, but I have no idea how to start troubleshooting this at all.

PLEASE HELP!!
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suriyaehnopCommented:
Do you try to upgrade the DL version. I have same issue when migrate Exchange 2003 to Exchange 2007. DL whch migrated from Exchange 2003 to Exchange 2007 failed to be edited. I have to upgrade the DL version.

You may refer to this link:

http://theucguy.net/upgrade-distribution-groups-after/
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AmitIT ArchitectCommented:
Follow this:
http://exchangeserverinfo.net/2013/12/upgrading-distribution-groups-from-exchange-2007-to-exchange-2013/

Test with one distribution group and then proceed with rest.
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