Photos "Imports" Folder

I think I have he answer to this but wanted to ask the group here.

In transitioning to MacOS, I have been moving my photos from file storage to the Photos app and up to iCloud. In the process all pictures that I drop to a new album stay in Imports.

Is there any way to remove them from imports or is that where they stay indefinitely since they were imported from a file? As I have already moved them to a album and just trying to reduce the redundancy but understand its purpose since these were all imported into Photos and not from a device or product.

Please confirm I have this correct and understand that they will reside in this folder moving forward.

Thanks