changes default functionality of wp

It seeme that it works good, but then it I realised a problem.
It always adds the following by default: ?post_type=portofolio&p=342
Instead before this plugin, it was: portofolio/custom-name

I needed to set up custom permalinks only for some posts, but now I have to add permalink for each post, it is not what we need. We would search for another plugin.