For example, I got two audio tracks inside of a folder track. First audio track has a sample that spans from 0 to 5th sec. and second audio track has a sample that spans from 5th sec to 10th sec. So, the track folder region that contains these two audio tracks spans from 0 to 10th sec. Now, if I copy and paste this folder track region so that the second instance starts from 10th sec and spans until 20th sec, sample from audio track 1 will be copied to start from 10th sec until 15 sec and sample from audio track 2 will be copied from 15th sec until 20th sec. WOw, this is confusing. I think a picture will explain this much better:

