Public Folder Migration issues- Exchange 2007 to 2010

This has been a thorn in my side for awhile. but I haven't had a chance to solve it.  We have already installed Exchange 2013 and moved users onto it.  We have several users that have to remain on Exchange 2010 for 3rd party Application reasons.

The issues I am experiencing are:

1)  One Public folder doesn't seem to replicate and therefor can't be fully moved.  Public folder name is Days Off.

2)  If I turn off the Exchange 2007 server, users on both 2010 and 2013 mailboxes can no longer access public folders.

Below are the details for the public folders and also the event shown on the 2010 server when doing an Update content on the Days Off folder.

Update content on Days Off:

On 2010 server:

Log Name:     Application

Source:        MSExchange Store Driver

Date:         12/11/2013 2:17:30 PM

Event ID:     1020

Task Category: MSExchangeStoreDriver

Level:        Error

Keywords:     Classic

User:         N/A

Computer:     XYZ2010EX.<company>.com

Description:

The store driver couldn't deliver the public folder replication message "Folder Content Backfill Response (PublicFolderDatabase@<company>.com)" because the following error occurred: Can't save invalid object Object Violation. Invalid property = [Calc:EndTime] EndTime. Invalid data for that property = 3/23/2010 10:00:00 PM. Constraint violated = Property [Calc:StartTime] StartTime must be LessThanOrEqual when compared to property [Calc:EndTime] EndTime....

Event Xml:

<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">

  <System>

    <Provider Name="MSExchange Store Driver" />

    <EventID Qualifiers="49156">1020</EventID>

    <Level>2</Level>

    <Task>1</Task>

    <Keywords>0x80000000000000</Keywords>

    <TimeCreated SystemTime="2013-12-11T21:17:30.000000000Z" />

    <EventRecordID>1621506</EventRecordID>

    <Channel>Application</Channel>

    <Computer>XYZ2010EX.<company>.com</Computer>

    <Security />

  </System>

  <EventData>

    <Data>"Folder Content Backfill Response (PublicFolderDatabase@<company>.com)"</Data>

    <Data>Can't save invalid object Object Violation. Invalid property = [Calc:EndTime] EndTime. Invalid data for that property = 3/23/2010 10:00:00 PM. Constraint violated = Property [Calc:StartTime] StartTime must be LessThanOrEqual when compared to property [Calc:EndTime] EndTime...</Data>

  </EventData>

</Event>

I have read through a LOT of threads and googled the issues and methods and followed them.  I have even run ISINTEG on the 2007 server.

Any help would be greatly appreciated.

Thanks.