I have some questions about servicepacks and compatibility.
1) How can i find out wich servicepack my portal runs on?
its a SAP Enterprise Portal 6.0 NW04
2) Can a project deployed in NWDS sp 9 be imported in NWDS sp 11?
3) Does the servicepack of the ACF have to be on the same level as NWDS or portal or both?
Go to http://<host name>:50000/
go to system information and you can see the current patch level
Since you are importing a project from a lower patch level to a higher one there shouldnt be any problem
Hope this helps you