My Sydrive calendar was deleted online after upgrading my Windows phone.

Upon synching, somehow, a 2nd Hotmail account was created that put duplicate entries into my phone's calendar right next to the original entries.

I deleted all the duplicate Hotmail2 entries, and the originals remained on my phone.

However, when I turned the phone on the next day, ALL my calender entries had disappeared... years worth of birthdays, meetings, anniversaries, to do's, etc.

How can I get them back?

- Carlos