I have installed 2.0.4 and then upgraded to 2.0.5 to 2.0.6 but I have few errors and couple of features are not working properly.
So, I want to do it freshly again. Can I install a full 2.0.8 and can I just use the same old database (2.0.6)? Coz, I had so much of data and online orders in it.
The DB schema changed in most releases. Hence using code that is trying to access a column in the DB that does not exist (or of differnt type or primary key) will result in a fatal error or duplicated data.
Alternatively, you could load the new source and then re-apply the var/upgrade/