Using Slashes In Url's?

Hello everyone. This is my first time using ghost, and I installed the latest version for the first time yesterday.

I have a site which has links like:

I tried to manually edit the URL when posting them, but it changed it to:

I tried to look around and I found out that you can use /year/month/date on the URL, but that impacts all URLs. Not all of my old URL’s are on that format, but there are some of them which are very important in this case.

So my question is:
Is it possible to change the URL structure of SOME posts with the date, and some with default format?

I am tried of searching, and if I can’t find a way, I am just going to redirect the old URLs to the new ones.

Thank you in advance!

Thank you in advance!