I am playing with Zoho to get to know it and I came to a problem. I imported the contacts from Excel and then I've changed some data inside, trying to update it in Zoho too, but nothing really happens - no update. What am I doing wrong? 

What I've done: I have let's say 10 columns in Excel and I've changed birthday date (added a corrected year) of a contact in a column 2. I've clicked on "import contacts", chose name, surname and e-mail of a person and also "column 2" (b-day column) to import. After the import birthday was exactly the same as before, nothing updated. How shall I do that?

One more question: How can I import data for boolean from Excel? I tried to do a check box in Excel, but it didn't work .. ?

Kind regards,

Stela