By default when pages are copied within the Episerver CMS both the source and the resulting pages will have the same publish status and time. This is expected behavior within the CMS.
Although this is intended functionality there may be scenarios where is is more desirable for the resulting page to not go live immediately after being pasted into a folder. The content could be kept from publishing by pasting into a new project within the CMS and then published at a later point in time. The following link goes over the projects functionality within the CMS.