The updateRecurringDate API method is not properly calculating due dates for task created with the following format:
"ev 27 starting 27.apr.2011"
It doesn't seem to matter if these tasks are created on the website or through the API. If they're updated with the API method, the year will be incremented, instead of the month. The website appears to be calculating the next date correctly.
"due_date": "Wed Apr 27 23:59:59 2011"
"due_date": "Fri Apr 27 23:59:59 2012"
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