Auto copy assets to project folder
For my projects, I still use a rigorous approach in copying all assets to a designated project folder before they are imported into a PPro project. This way, I prevent any assets from getting lost in the process, because they originated from temporary drives, download folders or other drives on your system beyond the project drive.
However, things would get a lot easier if PPro offered the possibility that anything that gets added to the project bin via drag & drop or the import feature, actually get copied over to the folder, perhaps as a background process. Meanwhile copying takes place PPro accesses the original source and when copying is done it replaces the instances with the copied file in the project folder on the hard drive.
This way, at the end of the project, you only need to copy the entire project folder on one or two archive drives to complete the archiving stage of the project.
Nicolas from Autokroma commented
Why not doing the Archive stage of the project with the Project Manager in Premiere Pro ?
With the Project Manager you can copy all the used assets of your project (or from a master sequence) into a new folder. So better than having every footages you imported into your Project, there will be only the footages which are USED in this project (or in this timeline if you choose a sequence).
Same argument for transferring the project to someone else if you need to. You will prefer to avoid the unused parts.
And in case you're not lucky / happy with the native Project Manager, there is a Free plugin called "PlumePack" which could help you on this (with more features if you choose the Premium version).
Nicolas from Autokroma
Adrian Freed commented
Copy is an option in File/Project Settings/ Ingrest Settings/Ingest