PR Sort closing raised for Project cost

Hi All,

I have a Project to which a sales order is assigned since the process is sales driven,in for one of the networks there is a component which is to be bought from external vendor. To asses the cost user has raised a PR quite a long time back and now due to some reasons he has to short close that PR and later on archieve it. However I want to know that if PR is closed then it just delete the commitment against Network and will not affect the Planned cost.

Please validate my understanding and correct me if otherwise.

Thanks & Regards,

Sandeep