WorkBaskets do not seem to be applicale in offline mode, as of 7.2.1.
When creating offline-enabled apps that use flows and subflows, keep in mind the following information:
The worklist displayed in an offline app must be of the Assign-Worklist type.
The latitude and longitude coordinates are recorded for assignments performed in offline mode.
Both the client and the server processing date/time stamp is recorded for each assignment performed in offline mode.
You can create work with parameters.
pyWorkParty is not supported while working offline.
You can open work by handle.
The confirm harness used is the confirm harness that is set on the pyStartCase flow.
When building an application on top of another application, you cannot reuse flows from the built-on application in offline cases. To reuse flows from a built-in application, save the flows again into the class of the current application.