I had a SharePoint 2010 project that deploys a WebTemplate to the farm. I upgraded the project to make it compatible with SharePoint 2013 and updated the solution in SharePoint farm. Now, when I try to create a new site or site collection based on this template, template is not listed in the available list. Template is only available in the site collection creating page, if I select 2010 compatibility mode.
I updated in the onet.xml file the UIVersion to 15, but nothing changed. Template is still missing.
Should I change anything else to make the previous SharePoint 2010 WebTemplate compatible with SharePoint 2013?