s2sailor's post in Is there a manual sync button? was marked as the answer
The sync button isn’t hidden. They have removed it. There are numerous comments on the forum requesting it back. No matter how good they think they can make the sync, and v10 is definitely not there yet, I think we should always have a manual sync option.
s2sailor's post in is OCR of PDF's a premium only feature? was marked as the answer
You need to be a Premium subscriber to get OCR service from Evernote. A plan feature comparison is here.
If you decide to OCR documents on your own, Evernote will search these documents, even for those in the basic plan.
s2sailor's post in How to delete default notebook & Make local notebook default notebook was marked as the answer
That is correct. EN will not allow a local notebook to be used as a default. You are required to have at least one synchronized notebook.
I use mainly local notebooks myself but have one sync'd notebook named inbox that I use for collecting emails to EN or webclips. I check that daily and then move the notes from there as needed.
s2sailor's post in Importing from older versions of Evernote was marked as the answer
I found the older post that I was thinking of. I stand corrected, the upgrade path is no longer supported by Evernote customer support, but here are the details. Use at your own risk and please backup your data first before trying.
EverNote v2.3: https://dl.dropboxusercontent.com/u/12760413/EverNote2.zip-- this is a patched executable which can coexist with modern versions of Evernote.
Evernote 3.1: https://dl.dropboxusercontent.com/u/12760413/Evernote_188.8.131.525.exe-- this is the last Evernote version that could import EverNote 2.x databases.
EN2Export: https://dl.dropboxusercontent.com/u/12760413/EN2Export.zip-- stand alone utility that converts EverNote 2.x databases (.enb) to modern EverNote database (.exb). Currently it converts HTML notes only, all other EN2 note types are skipped. I may add support for other formats if someone needs it.