Drag and Drop copy pages

In Keynote one can use a keynote slide, in another presentation, by using drag and drop. When I try to use it on sparkle, the drag and drop doesn´t work. If I want to use import, is only for external websites, but not for an specific page already designed on sparkle. How do you use a page designed on sparkle for another project on sparkle?

Currently the only way is to copy/paste the contents of each page.