Upgrade from Lifetime Standard to Plus

[elevtechlift]

Greetings,

If I initially purchase a Lifetime Standard license and then somehow, I needed the features from Plus so I need to upgrade the license to Plus, how does the license upgrade work? What happens to the 1 year of free updates, tech support, and online resources that came with the Standard license? Would the privileges be extended (I.e. (remaining time with Standard) + (1 year with Plus)) after upgrade? Or would the privileges remain 1 year from after purchasing the first license? Does this also apply if I upgrade a short-term license midway (e.g. upgrade from Standard to Plus on day 15 of a 1-month license) from Standard to Plus?

Thanks!