Integrated Planning data entry via Analysis Office 1.4 SP7

Hi folks

I am following your blogs on Analysis office and have a simple question

We run at customer site analysis 1.4 SP7

I try to use it with a SAP BW IP query

In Bex and web my query works fine..
Data can be entered and changed

Opening the query as datasource in Analysis excel
( planning is turned on in settings of Analysis Excel) will not allow me to interact with the ribbon button for planning

All buttons are inactive
Any idea... Am I missing a step to use IP entry ready queries in Analysis excel?

Any help is  highly appreciated

Thanks
Joerg