Exchange 2003 - Event 9667 - Named Properties Reached the quota limit (16384)

I am getting a repeating error and I cant seem to get it to stop. The error is:

EVENT ID:  9667

Failed to create a new named property for database "First Storage Group\Mailbox Store (EXEXC)" because the number of named properties reached the quota limit (16384).
 User attempting to create the named property: "SYSTEM"
 Named property GUID: 00020386-0000-0000-c000-000000000046
 Named property name/id: "Yynthel"

What I have done:  
1) Confirmed my quota limit is already at 16384. This was probably changed years ago to this value.
2) I installed a new exchange server and have moved 75% of my mailboxes now to the new server/mailbox store.

Concerns:  
1) I cannot completely disconnect this server because of other issues. Removing the first exchange server will be a challenge for me right now because of time and its on primary domain controller and active directory installed.

Questions:
Can I clean this name properties to make it smaller?
Can I start over with named properties database? What is impact?
Or will this just go away when I finish moving all my mailboxes to new server?  ...and I leave this server as the primary email server for awhile?
allenkentAsked:
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Seth SimmonsSr. Systems AdministratorCommented:
Microsoft's only solution is to move all mailboxes to a new, blank database.

Events 9666, 9667, 9668, and 9669 Received When Named Properties or Replica Identifiers Are Depleted for An Exchange Database
http://technet.microsoft.com/en-us/library/bb851495(v=exchg.80).aspx
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