Exchange 2010 PF replica set to itself

Not really a problem more of an understanding issue.

Background
Migrated from Exchange 2007 to Exchange 2010 some time ago. Backed out the old exchange server and I am currently preparing to migrate Exchange 2010 to Exchange 2013. We use Public Folders.

Current situation
We have one Exchange 2010 server that holds a single Public Folder database.

Question
Looking at the replication tab on our current public folders which is held on, lets say 'server1' there is a replication entry to replicate to 'server1'. Now this may be correct but I am not understanding why it replicates to itself.
If I attempt to remove that replica from within the public folder gui I get an error - You must specifty a value with the replicas parameter.

It doesn't appear to be causing us an issue but would like to understand this and cannot find any information on it.
Crown_DeccAsked:
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Seth SimmonsSr. Systems AdministratorCommented:
it doesn't replicate to itself
it shows what servers have copies of that folder
at least one server has to be listed there; can't be null since it needs to exist somewhere
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Crown_DeccAuthor Commented:
Ah, makes sense now. Thank you for the explanation.
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