Upgrade assistance of SMA-SM 2018.8 to 2019.2

Hi All,

We wanted to upgrade our service Portal from 2018.8 to 2019.2 then 2019.5

We are using service Manager 9.52 and service portal 2018.8

What I understood is upgrade is not available, instead we have to uninstall 2018.8 and install 2019.2 which is portal component of SMAX, does this mean that Portal will not host smart Analytics since it is asked to move the Smart Analytics to  Service Manager? has anyone done this activity?

Can I export and import the Complete configuration from 2018.8 to 2019.02?