[TYPO3] Merging databases

[Andreas Koppa]

Hello ries,

> Merging might sometimes be difficult,
> for example if you use Templavoila then exporting
> your page tree as a t3d will always fail.
> Incase you are using standard templating
> then right click on a page and then find export.
> On your other site import the t3d again.

I don't use TV. 
Should I export the whole tree (id=0) or the root (id=1)?  Is it reversible?

Thanks for your suggetion