Hi, I have many listing that is similar, so it is possible to copy an existing listing so that I don't have to re-enter all the tags etc..
How similar? Please make sure you follow this rule:
Avoid uploading ‘reskins’, or many project pages for minor changes
Do not create multiple project pages for projects that are essentially the same but with minor adjustments. If the code or asset changes are substantial it’s okay. Additionally, if you're trying to preserve different versions of the project, eg. jam versus final, it’s okay.
If that applies to your projects, there are probably better ways to achieve what you want.