Copy/Paste images in body and upload to server

Hi,

I am creating a new Wiki for our company in Drupal. It is absolutely essential that we can migrate the wiki pages from the old Wiki to the new Wiki in a fast way. The most interesting would be that we can just copy each page (text + images) and paste it in the body of the new Wiki. This works but the images still have their URL linked to the old Wiki. So when we will delete the old Wiki all images will have no reference anymore and will be blank.

Is there a module/solution to copy/paste these images in the editor and save them. Because we have a lot of images uploading each image separately would be too time consuming.

Thanks in advance!