Hi Alfons,
As mentioned correctly by you, the PageInfo methods have been deprecated in BI 4.0 Report Engine SDK.
There is no way using Report Engine SDK BI 4.0 API's to get this information.
However, with RESTful Web Services SDK you can perform most of the deprecated functionality.
You might want to take a look at the developer's guide for RESTful SDK's
http://help.sap.com/businessobject/product_guides/boexir4/en/xi4sp6_webi_restful_ws_en.pdf
The section "3.2.4.1 Getting the properties of a document" lists all the document properties. However, I wasn't able to see any property about pagination.
Further, there is a section where you can specify the pagination format while exporting report
3.2.5.2 Exporting a document in paginated mode
You may also want to check the other sections in developer guide for more information.
Regards,
Shreyans
