DPS remembering the previous page

hi everybody, i've a problem with a dps magazine.

this mag has 5 articles with various page for each article, i would set to scroll articles in horizontal slide and pages with vertical slide.

this works, but the mag is remembering the page i visited before, so with horizontal slide it doesn't take me to first article page but the last page i visited in that article.

how i can make the tab "forget" the last page visited?

thanks!