Decomissioning Lync 2013 on premise in a Lync Online Split Domain Hybrid scenario

We currently have Lync 2013 running in hybrid split domain with Lync Online.

All users have now been migrated to Lync Online and we wish to decomission our on premises footprint and use pure Lync Online.

There is very little documentation for this - has anyone seen anything or know the steps involved? I assume we also need to disable sip shared address space in the online tenant etc?
ryanfieldingAsked:
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Mai Ali (MVP)Senior Infrastructure ConsultantCommented:
After all the users are moved to Lync Online in Lync Hybrid, you can refer to the following information to decommission Lync on-premises:

1.  Make sure all the users are moved to Lync Online.
2.  Point SRV records to Lync Online
3.  Decommission Lync 2013 server. It’s not necessary to disable sip shared address space.

For detailed information about how to decommission a Lync 2013 deployment, You can check below link {it's same for lync 2013} http://technet.microsoft.com/en-us/library/gg195815(v=ocs.14).aspx
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