Ended up using a computed variable as Claude31 suggested. Worked great!

So here is all the code Table(artViewModel.filteredArtPieces, selection: $selection, sortOrder: $sortOrder, columnCustomization: $columnCustomization) { TableColumn("Image") { artPiece in if let imageData = artPiece.artImage.first, let image = UIImage(data: imageData!) { Image(uiImage: image) .resizable() .frame(width: 50, height: 50) } else { Image(systemName: "photo") .resizable() .frame(width: 50, height: 50) } } .customizationID("Image") TableColumn("Name", value: \.artName) .customizationID("Name") TableColumn ("Art ID", value: \.artPieceID) { artPiece in Text(String(artPiece.artPieceID)) } .customizationID("Art ID") TableColumn ("Price", value: \.artPrice) { artPiece in Text (formatMoneyDouble(artPiece.artPrice)) } .customizationID("Price") TableColumn ("Date", value: \.artcreateDate) { artPiece in Text (artPiece.artcreateDate, style: .date) } // .resizable() .customizationID("Date") TableColumn("Artist", value: \.artistName) .customizationID("Artist") TableColumn("Meduim", value: \.artMedium) .customizationID("Meduim") TableColumn("Type", value: \.artType) .customizationID("Type") TableColumn("Status", value: \.artStatus) .customizationID("Status") TableColumn("Location", value: \.artLocation) .customizationID("Location") /* I want to create columns for this variable var artDefinedFields: [ArtDefinedFields] = [] which is defined in the datasource . */ } .tableStyle(.inset) struct ArtDefinedFields: Identifiable, Codable, Hashable { var id = UUID() var name: String var value: String var isVisible: Bool }

This is now working as expected with the latest beta of Sequoia

I went back to a July 10 version of my app and put most of the changes into this version, and now it works fine. So, I still don't know what I broke to cause this but I was in the process of migrating my app to swift6. At this point I am fine and will put off the migration to swift6 to the future.

A few more points to add to this issue: I used another computer which had never been used for testing my app. macOS Sonoma as well as Xcode 15.4 was used. Same issue. To me this suggests I have some in the source or Xcode settings is causing this behavior. I changed my source to I changed this code to print the SwiftData containers etc. var sharedModelContainer: ModelContainer = { let schema = Schema([ ArtPiece.self, Clientele.self, TrackingArt.self, Invoice.self, InvoiceItem.self, AppSettings.self, Pay.self ]) let modelConfiguration = ModelConfiguration(schema: schema, isStoredInMemoryOnly: false) do { let container = try ModelContainer(for: schema, configurations: [modelConfiguration]) // Add print statements here print("ModelContainer:", container) print("Configurations:", container.configurations) print("Schema:", container.schema) return container } catch { fatalError("Could not create ModelContainer: \(error)") } }() I see this line on the Xcode Debug Console url: file:///Users/bobsoule/Library/Containers/B43D6A46-213E-427E-ACE5-B7EE77071C0C/Data/Library/Application%20Support/default.store However I don't see this folder B43D6A46-213E-427E-ACE5-B7EE77071C0C in /Users/bobsoule/Library/Containers I have the issue on Xcode15 as well as Xcode 16 beta I have attached the Debug Console Log from this test. I am able to create and populate with data three of the tables before this issue arrises. debugConsole.txt

At this point I have a couple of questions. First one is regarding your first response. Were you saying some how swiftdata know I change one of the table models and I need to do a migration? Secondly, I wanted to be able to to a clean build and have the app run as if it was the very first run, so I am thinking I need to delete any and all swiftdata persistent data. For now I am not using cloudkit. So, what you described in your second answer is how to do this? So, I am trying to find the cause and a resolution for the tables being dropped Thanks

Is there a way to start complete fresh? I have made some changes to one of the tables but I don't want to save any data so I can start like this is the first time I am running the app? I tried a couple of actions like removing the scheme and deleting the container from macOS Sonoma but the error persists? Thanks

It turns out my iCloud Drive was much bigger than I thought so after cleaning up some automated backups to iCloud I was able to get back to expect size for iCloud content.

This is fixed in the Release Candidate code.

Does the same thing on Ventura and Xcode 14

I have my iPad connected to my Mac and I am running the code above on the iPad. I am using my iPad to test because it has more images to test with than a simulator. This code works as expected on my Mac but not on my iPad. The specifics of all the devices are as follows: Mac Sonoma beta 6 Xcode 15 beta7, iPadOS 17 beta 7. Reducing the frame size makes no difference. I will test on Ventura with Xcode 14 and iPadOS 16 later today or in the morning to see if this makes a difference. Thanks for the help!

I get the same results on Ventura and Xcode 14

Yes I add tried the .tint modifier as well with no success. BTW I am using Xcode 15 beta 7, I think I will give a try with my Ventura Xcode 14 to see if that makes a difference.

I found these three files which are part of core-data datastore as well as swiftdata 144 -rw-r--r--@ 1 bsoule staff 73728 Jul 29 10:10 default.store 64 -rw-r--r--@ 1 bsoule staff 32768 Aug 7 14:57 default.store-shm 1160 -rw-r--r--@ 1 bsoule staff 564472 Aug 7 14:56 default.store-wal in my library directory --> Library/Containers/CHCS.ArtManager/Data/Library/Application Support I expected to also see a file with an sqlite extension but I did not? Any ideas where the sqlite database is stored?

Here is the link for the projects. [https://developer.apple.com/documentation/SwiftUI/Building-a-document-based-app-using-SwiftData)