If you use paste text only you will copy the numbering, but it will not be automatic.

If you insert a couple of cross-references. You can preserve the automatic numbering as well.

Here is a short video showing how to do it. (It will only be up for a short time.)

In brief, you insert two cross-references, one to the paragraph number, and a second to the paragraph text. These are fields and may have to be manually updated.