active version of generic DS not available as 3.x?

hello all,

I have created a generic datasource and replicated it on BW side as 3.x Datasource. And then when I try to create transformation it says active version of emulated datasource in not available. SO i go and try to activate the DS but the activate button is greyed out even in change mode.

Can someone explain what do we have to do here?

If I replicate it as datasource (7.0) then it replcates as active version.

Thanks,

Kiran