Hi,

I'd like to move to your new version but i have a lot of listings. I don't want to lose it if i reinstall the 4.3.3. What is the best way to do it ?

I think you have changed some tables. Do you have a changelog of the modifications you have done in the database since the 4.1.1 ? Maybe just of the concerned tables

@chris
Standard upgrade.
https://osclass-classifieds.com/installation

Make sure to backup everything before upgrade.