I've and migrated SharePoint environment (2010 > 2013). Everything is working fine, except the look and feel on old lists migrated from SharePoint 2010.
Dialogs still open in a modal and I have the old "Add new item" button with the green + on the bottom of the list instead of the new modern ui style blue one on the top.
How can I update the list to look like a list directly created in SharePoint 2013?