Hi @Mr Edge ,
Welcome to Microsoft Q&A forum.
You can refer to this documents: Migrate from ASP .NET to ASP .NET Core and Migrate from ASP .NET MVC to ASP .NET Core MVC. For migrating from VS 2019 to VS 2022 you can refer to this document: Project migration and upgrade reference for Visual Studio.
Normally, if you follow the documents to migrate projects, you will(should) not meet errors or compatibility issues. In case you meet compatibility issues, don’t worry, report the issues on Developer Community and VS product team will help to fix the potential issue.(Help > Send Feedback > Report a Problem…)
Best Regards,
Tianyu
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