How do I repost a post from a past DUerror onto a current post?

I asked this earlier and got no response. Does that mean no one knows how to do it? Or that it can't be done? I have an android tablet touchscreen and am tech retarded and I am learning what I can and cannot do. It is VERY frustrating. I know tech people are really into sharing help so I do not know why I haven't received help by now.

The post is one that has text, links, twitter video that can only be viewed by BBC connected viewer, etc. I tried to highlight the entire thing to cut/paste, to provide a link doesn'the seem to work, what am I doing wrong?