Office 365 not syncing calendar

I initially imported a several pst file into a Outlook 2007 profile. These items then synced with Office 365 and the entries matched up between Outlook and Outlook Web.

It was after the sync that I realized that some of the entries weren't needed.

So I went into Outlook and deleted all Calendar entries. I have waited several hours and I can still see all of the unwanted entries in Outlook Web.

Outlook doesn't appear to be syncing and says that this folder is up to date.

Any suggestions?
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Vasil Michev (MVP)Commented:
Just remove them from OWA I guess. Restarting Outlook or running it in safe mode might help. Also if the profile size is over 5GB consider moving items to the archive and cleaning up a bit as Outlook will start acting funny (especially on older versions such as 2007).
Hi Roy, one thing to check is to make sure you deleted them from the same calendar. When you look at your calendars in outlook, double check to make sure you are deleting them from the account the account that is the o365 account. It almost sounds like you might be deleting them from a different calendar than the one thats attached to o365.

Something else you can try is to create a new outlook profile to see if that helps.

Important though is that Microsoft does not make any guarantees that Office 2007 products will work with O365 since it's no longer in mainstream support. It may very well be that the problem you are seeing will never work right because of this. If you can I'd also recommend you upgrade your Outlook to a current version. See below from Microsoft.

"NOTE   Office 365 is not designed to work with Office 2007 because Office 2007 left mainstream support on October 12, 2012. Office 365 does not offer code fixes to resolve problems you encounter when using the service with Office 2007. You should expect the quality of the user experience to diminish over time, and many new Office 365 experiences will not work at all."
roy_battyDirectorAuthor Commented:
In the end I deleted the user account and started again with it - was the quickest way to do this.

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roy_battyDirectorAuthor Commented:
Thanks for the advice  here
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