according to note 1064635...
Enhancement Package 4 of SAP ERP 6.0 stack 6 is equivalant to ERP SP Stack 17
so if my source system is at ERP SP Stack 17 then when upgrading I have to get to EHP4 Stack 6.
that is pretty clear.
what if my source system is ERP SP STack 19? do i have to wait until EHP4 stack 7 comes available? will i lose data/functionality as SP6 is the latest available?