Upgrade BW 7.00 -> BW 7.31

Hi,

I have a specific question:we have only BW 7.00 ABAP installed and want to upgrade to BW 7.31.

After the upgrade can we still have only BW ABAP or must we also install BI Java?

In other words is BW 7.31 ABAP-only supported by SAP?

Thanks for your help.

Regards

Fabio Giovannetti