$apply does not produce output for ActivityDefinitions

[rdingwell]

I have a PlanDefinition resource that utilizes ActivityDefinition and other PlanDefinition resources in the actions. The ActivityDefinitions are targeted to create ServiceRequest resources. The PlanDefinitions seem to process ok , but the ActivityDefinitions do not appear to produce any output in the CarePlan RequestGroup.

Here is an example of the output for an action in the RequestGroup --
{
"id": "ENACT-5",
"title": "ACT-3",
"description": "Cognition Assessment",
"resource": {
"reference": "ENACT-5-ACT-3"
}
}

While there is a reference to I would expect to be the ServiceRequest generated by the ActivityDefinition, there are no ServiceRequest resources generated or other resources with that id. I also question whether references based solely on an id are valid. I would assume that references to other contained resources in the same parent context, the CarePlan in this case, would need to follow the #{resourceType}/{resourceId} semantics, but I will add that as a different issue.

[rdingwell]

Upon further testing it appears that this is an issue related to a PlanDefinition relying on other PlanDefinition resources for actions. For example, we have a PlanDefinition that looks somewhat like the following.

PlanDefinition -> TopLevel
action -> PlanDefinition A
action -> PlanDefinition B
action -> PlanDefinition C

If we execute the $apply operation directly on PlanDefinitions A-C we see the ServiceRequests being generated and returned in contained resources for the resulting CarePlan. However when we execute the $apply operation on the TopLevel we see a RequestGroup for the TopLevel PlanDefinition along with the resulting RequestGroup resources from PlanDefinitions A-C, but we do not see the ServiceRequests that should be generated from A-C. So this seems like it is an issue with migrating all of the generated resources up the chain to the higher level results.