Hi there,
the way it works is:
1. I write a post and i enable pingbakcs.
2. My friend posts a link to that post on his site.
3. I get a Pingback
So if:
1. I add that same post link in the content of another post.
2. Someone copies my content including that link and posts it to their site.
3. I get a pingback.
So content must contain links to posts on your site to get pingbacks for them.
If the person copying the content removes those links, then no you won’t get a pingback.