Migrating .NET Framework 4.6.2 to .NET Standard 2.0

Hi All,

We have a set of class libraries which are created under.NET Framework 4.6.2, we want to move these libraries into .NET Core 2.0 or .NET Core standard 2.0

We have the following ways,

1. Create a new project and copy over the code.
2. Convert your existing project by editing the CSPROJ  file.

Which one is better to migrate the libraries and will dot net standard impact on performance over the the.NET core.

Is there any alternatives to migrate these collections.

SrinivasReddyVelpula