Workflows are computational representations of business processes.
When workflows are changed,  a strategy for  dealing with actual
running workflow instances is needed, since workflows are
typically long-running processes. As the basic strategies
abort and flush are rarely applicable, hybrid workflow schemas
have to be defined (transitional provisions) for the continuation
of these instances.
In this paper we focus on workflow evolutions where merely the
order and parallelism of  activities are changed and present a
technique for generating a manifold of hybrid workflows based
on control flow and data flow analysis.