I have a Project, which is having Xamarin native IOS, and IOS designs are done in swift and Xcode, is there any way to convert this Project into MAUI?
Do I need to totally Rewrite the project or just need to Follow some steps to Convert this swift ui as XAML and use the other cs Files as it is?
Native Xamarin.iOS projects can upgrade to .Net for iOS without needing to convert to the full Maui UI. You don't need to rewrite the native UI in Xaml to use it with .Net for iOS. You'll need to update the project to SDK style, and you may need to update some of the cs code, but most should work as is.
For more information, you can check the official document Upgrade from Xamarin to .NET.
For more information, see Upgrade Xamarin.Android, Xamarin.iOS, and Xamarin.Mac projects to .NET.