Duplicate all the artifacts in the project into a folder and add in a module
Accepted answer
I am assuming the requirements are not in a module now.
1. If the primary text and attributes of the copies should or could stay the same, then you could simply add them to a module. Base artifacts continue to exist outside the module. The IDs remain the same.
2. I am assuming it's OK if the copies have different ID numbers (which is what would happen if you copied them manually).
In that case, it's probably easiest to export via CSV, then import again.
You could import the CSV then add them to the module, or you could construct the module in the CSV file. See the docs and import options. If you want to build the structure in the CSV file, you can export a small module to see the pattern you need to follow.