Upgrade question
 

After some time of deliberating, we are now in the process purchasing our new license since the license for 3 has expired.

I know this may sound silly but my question is, we are currently operating on 4.0.4 so once we are licensed again, do we just download the current 4.0.7 or do we need to download .5 and .6 as well?

Also, our former developer is no longer with our site. Is this difficult to do for a novice that can catch on quick?

Thank you