MYSQL Sync

Hi I like the sound of using MYSQL as a central DB to sync Kodi

The wiki says the DBs change with each new version of Kodi so Kodi Upgrades pick this up and upgrade the DB

I have one question if I was to set this up now with Kodi 15 then in the future point a Fresh Install of say Kodi 17 to my SQL DB what would it do ?

Would it update the old DBs ??

Thumbnails sync also seems to make sense so thumbs would get generated once and only hammer the CPU once ?