[xwiki-users] Which is the best strategy when migrating from one wiki version to another wiki version?

As of know my xwiki version is 3.2. Now we are planning to move on 3.3. Now as admin user we have done lot of customization regarding user,group,space creation and their right management. We have created some content and attachment also under some user created spaces and pages. Though everything is part of xwiki databse as i have not explicity done any settinsg to save any stuff on disk Now when i am migrating to 3.3 i am doing fresh installation. Till here fine. Now i want to migrate all 3.2 xwiki data to 3.3 xwiki. As per admin guide there seems two be two approaches :- *Approach1:-*Export 3.2 xwiki data to xar file and then import it in 3.3 xwiki. *But it did not work for me*, as after migration i do not see some stuff like main space web homepage same as it used to be in 3.2 xwiki. *Approach2:-* Take back up of complete 3.2 xwiki database . Now for 3.3 xwiki just make empty 3.3 schema and restore it to 3.2 xwiki data dump. *It worked for me.* Every thing is same in 3.3 which was there in 3.2(that is what i wanted) Now my question is it the right approach? Do i have to take some precaution or need to be careful while doing this approach? *One last question on this say there are some database configuration changes in 3.3 like deletion/addition of some table, or deltion/addition of some column etc , in that case What will be consequences of this approach?*