I created a sub-site with Membership plugin settings. Then made that sub-site a template using the New Site Template plugin and created a new sub-site based on that template. (I checked all the boxes.) The Membership settings, access levels, subscription plans, etc. did not transfer over.
Also, I am not able to create access levels on the new sub-site. It says they are created but they do not show up as an access level. I'm logged in as super admin. Same if logged in as a different admin.