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Hi @유정 서,
Welcome to Microsoft Q&A!
Do you mean that you want to migrate projects between VS2017 and VS2022?
Please refer to the document to migrate your project: Porting, Migrating, and Upgrading Visual Studio Projects.
If your project doesn’t depend on new features of VS2022, you can backup your project and try to directly open it in VS2017. If there is not any errors or warnings, I suppose you can use the project in VS2017 and VS2022 both.
It is noted that if it is a .NET project, you may fail to open the VS2022 project in VS2017. The .NET 6 and .NET 7 are only supported with VS2022.
If you open the project in VS2017 and VS2022 at the same time, you can modify the project in VS2017. The next time you open it in VS2022, you may be reminded that the project needs to be reloaded to sync the changes.
Sincerely,
Anna
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