Potential for Data Loss: The steps detailed in the resolution of this article may result in a loss of critical data if not performed properly. Before beginning these steps, make sure all important data is backed up in the event of data loss. If you are unsure or unfamiliar with any complex steps detailed in this article, please contact Product Support for assistance.
PCT project folder size increases when an object is deleted.
EcoStruxure Building Operation
Project Configuration Tool, PCT
Any change made in PCT increase the size of PCT project folder. This is by design and it is a normal behavior of PCT.
The reason for this is that the project is a virtual machine using a dynamically allocated image which grows when memory is needed, but the image will not shrink when something is deleted.
The only way to reduce the folder size of a project is to backup all servers in the project, create a new project, restore the the server backups to the new project and then delete the old project.