fsfs wrote:
1. Today I've this structure on X2.
-2010
-- January
---Event1
---Event2
-- February
---Event1
-- Mars
-2011
-- January
---Event1
etc etc
as you described before
will this structure be able to import to X3 or is it impossible?
X3 supports any structure just like X2, so yes it does. However, perhaps your question is if the "mega menu" supports that structure? The mega menu basically support TOPLEVEL > CATEGORIES > GALLERIES, and as far as I can see, that is identical to your structure 2010 > JANUARY > EVENT1. The mega menu does not support an additional level (at least not currently). Also, if you don't use the mega menu, default will be an unlimited dropdown menu that supports and depth ... and in sidebar menu mode, it does the same. So basically, YES, X3 supports any depth of structure.
You may need to plan your structure though from a design perspective, in terms of how a visitor would engage your website.
fsfs wrote:2. If I want to import X2 content, I exclude the tn_files correct?
Basically yes, and you would need to rename folders from "myfoldername" to "1.myfoldername", eg. adding a number to make them "active" and in "order".