I have 2017 installed on my PC, along with templates and models I have made with it. I see there is a download link and a renew link for the EAA maker edition of solidowrks 2018 here:

https://www.eaa.org/en/eaa/eaa-membe...ent-design-kit

and it looks like I'm supposed to uninstall 2017 before installing 2018. I'm confused...
does the renew link work without uninstalling anything and update my 2017 installation to 2018?
or do I really need to uninstall 2017 first, and if so why is there an install and a renew link?

Also if I do need to uninstall, what happens to my templates and existing models? (of course they would be backed up, but it would be good to know if they would be left in place)

Also I have hsmworks (hsmexpress)cam module installed. If the SW2018 has integrated cam is that going to cause an issue with the update?

Please clarify if possible.
thanks