MOSS 2007 Event Receivers upgrade to SharePoint 2013 using same classes

Hi,

What could be the potential problems if I use the Event Receivers developed for MOSS 2007, deploy those wsps on SharePoint 2013 site and attach them to the respective lists. I used a third part tool to upgrade my site from MOSS 2007 to SharePoint 2013.

I am using the old Membership providers for my new web application and everything seems to be working fine.

Any insight would be greatly appreciated.

Thanks!