[aum]

I have a blackberry old and am stuck with a sync problem. I have 3 email addresses and all calender entries on my blackberry were being stored in name of one of them. I changed that default calender and the problem is that now the new entries do not sync with the pc. I also cannot find how to merge all calender entries on my blackberry under one id as this may have solved the problem. Can anybody help with these 2 issues.