Migration from OCS 2007 R2 to Lync 2013 no Edge Servers

As the title implies, I am tasked with migrating our simple chat only OCS 2007 R2 system to a Lync 2013 system. We already have a Lync server up and running that we tested with and now we want to migrate the existing users to the new server. All documentation and information I can find talks about having edge servers on the existing and new environment. My question is can this be done with out edge servers? We do not currently nor do we plan on implementing access externally.
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Jakob DigranesConnect With a Mentor Senior ConsultantCommented:
ah ... topology looks good.
But I'm afraid you have to take this further with Microsoft; http://support.microsoft.com/kb/2455114

Quote: 'If you receive either of the errors that are described in the "Summary" section during the migration phase of your Lync Server deployment, please contact Microsoft Support. Because of the complex troubleshooting steps that this kind of issue requires, a trained support engineer must help you troubleshoot this issue.'
Jakob DigranesSenior ConsultantCommented:
Sure ...

only thing for the edge servers is getting external traffic in to Lync/OCS - IF you'd deploy in.
Just keep migrating, no hassle what so ever.
centierbankAuthor Commented:
Thank you! Everything I see regarding instructions and videos end up using edge servers so I just wanted to make sure.
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centierbankAuthor Commented:
So I have attempted to merge my topologies. I have followed the guidelines of updating OCS to CU11, I have WMI Backwards Compatibility installed on the Lync Server. However when I try to merge the topologies in the Topology Builder, I get the following errors:

2013-10-01 11:04:26 INFORMATION :  User input file path: "C:\Users\me\AppData\Local\Temp\1\TopologyBuilder\2013_10_01_11_03_23\MergeTopologyInput.xml"
2013-10-01 11:04:26 ERROR :  Total number of validation errors: "1"
2013-10-01 11:04:26 ERROR :  Topology error description: "All services in a pool must be of the same version."
2013-10-01 11:04:26 ERROR :  Topology error instances: "[ TrustedApplicationPool:ops-fs04.cent.net ][ System.Object[] ]"
2013-10-01 11:04:26 ERROR :  Topology error reason: "ServicesInClusterOfSameVersion"
2013-10-01 11:04:26 ERROR :  There were errors while creating and validating a topology.
2013-10-01 11:04:26 WARNING :  Total number of errors is 1
2013-10-01 11:04:26 WARNING :  Total number of warnings is 1
2013-10-01 11:04:26 ERROR : BuildTopologyError

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Any help would be greatly appreciated as I am finding no answers out there.
Jakob DigranesSenior ConsultantCommented:
can you please post a copy of your topology?
centierbankAuthor Commented:
Sure thing, here is my Lync topology tbxml file without the tb.
centierbankAuthor Commented:
Thank you for your help. I was hoping that wouldn't be the case but unfortunately it is. I appreciate it!
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