Question: How to add a Target in a csproj file

[GFlisch]

Hi,

Before I add a Target in a csproj by using XDocument. When I do this now on VS 17.4.x I see the file is not touched and a Backup one is created. I don't know if there is a IVSProject interface that help to touch the file without creating a backup file and let the Target added in the csproj file...