Is data passed back to responder a read-only copy?

Question

I have a service that I call, adding a responder:
var modelingDataResponder:IResponder = new
ModelingDataResponder();
var modelingDataService:DataService =
EnterpriseServiceLocator.getInstance().getDataService("ModelingDataService");
var token:AsyncToken = modelingDataService.fill(myModel,
clientName);
token.addResponder(modelingDataResponder);
This causes the variable myModel to be filled. It adds a
responder called modelingDataResponder which implements IResponder.
modelingDataResponder is called when the fill completes.
My question is this. modelingDataResponder is called with
data that's a copy of the myModel object that was filled. But it
seems to be only a copy. It seems like executing code inside
modelingDataResponder that changes data fields inside the parameter
that is passed in just changes the data in a local copy, not in the
myModel object that was filled. The two objects have separate
addresses when looked at in the debugger, and changing a value in
one has no effect on the other.
So it's like the data that is passed back is a copy. The copy
can be read. Writing in the copy is OK, but it is just writing on a
copy, on on the object that was filled. Right?

Answer 1

- Since what version of LCDS is this issue resolved?
LCDS 3.0 and above.
- Is their  a Jira issue for this?
No, as we use an private bug tracking system for LCDS.
- Is a patch available?
No, sorry.  You would have to work through Adobe Technical support to get a hotfix for this, and I do not believe that one exists.  I would recommend upgrading to 3.1 if you can.
Tom