MyMoney is a rich client .NET ClickOnce application for managing your personal finances. It is written entirely in C# and is designed for programmers who want easy access to their data and who want to quickly and easily add their own features. Your data will not be locked up in some proprietary format, it is yours to do with as you like.
.NET 8.0 doesn't support all the ClickOnce features of .NET 4.8 See https://learn.microsoft.com/en-us/visualstudio/deployment/access-clickonce-deployment-properties-dotnet?view=vs-2022
Is there a way to use that info to perform the update?