Coredata Fetchrequest Foreach loop with subsections of data and sort methods - core-data

Question

I have a data model entity called Object laid out like so:
name: String
createdDate: Date()
updatedDate: Date()
My fetch request:
#FetchRequest(sortDescriptors: [SortDescriptor(\.updatedDate, order: .reverse)]) var objects: FetchedResults<Object>
I want to have my list of objects sorted with the most recently updated (keyed off updatedDate) at the top. I chose this sort method, because when combined with withAnimation I get a real nice animation when items lower in the list are updated and move to the top.
When the user creates a new object however, it goes to the bottom of the list because this new object doesn't have a value for updatedDate (intentional because my users tell the app when an object is updated). This behaviour makes sense but is undesired.
My current ObjectListView looks like this (simplified to focus on my question):
struct intervalsExist: View {
#Environment(\.managedObjectContext) private var viewContext
#FetchRequest(sortDescriptors: [SortDescriptor(\.updatedDate, order: .reverse)]) var objects: FetchedResults<Object>
var body: some View {
List {
ForEach(objects) { object in
NavigationLink {
ObjectDetailView(object: object)
} label: {
Text(object.name ?? "Unknown name")
}
.swipeActions(edge: .leading) {
withAnimation {
// Update `updatedDate` with current Date()
}
}
}
}
}
}
What I would like is for my list of objects to be presented as such:
---
Object with no updatedDate, most recent
Object with no updatedDate
Object with no updatedDate
Object with updatedDate, most recent
Object with updatedDate
Object with updatedDate
---
Where objects with updatedDate will reorder themselves to the the newest at the top when they are updated.
I tried using 2 sort methods in my fetch request, like so:
#FetchRequest(sortDescriptors: [
SortDescriptor(\.createdDate, order: .reverse),
SortDescriptor(\.updateDate, order: .reverse),
]) var objects: FetchedResults<Object>
While this gets me the ordering I am looking for above, items no longer re-order themselves within the list which is a key part of what I'm trying to build.