We earlier uploaded a preprint of an article prior to its publication. Now, may we substitute the DOI copy? Both have identical titles. Also, will the reads and other statistics of the Preprint carry over to the published copy from the DOI link?
Concerning a possible change from type "Preprint" to type "Article", see my reply to https://www.researchgate.net/post/How_can_I_change_the_status_of_my_article_from_preprint_to_published. If you created or got a DOI for the preprint, it is especially important to keep the preprint page.