Rules Missing in Outlook but not OWA

I have a user on Outlook 2013 connected to Exchange 2010 SP2 that only shows a few rules in Outlook but OWA shows more rules.

Is there a reason they rules are out of sync or do not show in Outlook? There also seems to be some phantom rule that is moving message to a folder but no rules match the criteria on why the emails are being moved to the folder. We did perform a SP2 to Exchange 2010 so not sure if the cause of the issue.
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Simon Butler (Sembee)Connect With a Mentor ConsultantCommented:
Exchange 2010 SP2 is end of life (went EOL last week), you should upgrade to Exchange 2010 SP3 as soon as possible.

Sounds like the rules engine may well be corrupt.

The only option is probably to reset the rules engine using outlook.exe /cleanrules and rebuild the rules again. The end user may not like that answer but it is probably the only one that will work. Usually I would say to export the rules, but you can only do that through Outlook and if Outlook isn't showing all of the rules there is some corruption somewhere.

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