José,

>Is there any way to requery all views inside a Business Object?

you can requery the main alias of the business object with BizObj.Requery().

If you have more than one alias in it, you can use BizObj.Requery(.F.|.T., "aliasname").

AFAIK, there is no method for requerying all aliases at once. But you can add a method to your bizobj subclass in which you're asking the dataenvironment object for all open cursors with DE.GetCursors() and loop through the array calling BO.Requery(.F.|.T., "aliasname").

HTH,
Armin