title: typo3 update from 4.2 to 6/7
body: <p>On a new project I have to upgrade a old typo3 installation from 4.2 to 6.2 or even 7.6.</p>
  
  <p>The big problem is, that everything is done with templavoila and all extensions are pibased.</p>
  
  <p>I learned with typo3 6.x all pibased extensions will die. But with my research now I found out that pibased extensions can still run in newer typo3 versions.</p>
  
  <p>My question now is, is it smart to stay with pibased extensions and templavoila? The alternative is to create the page new with extbase and fluid-templates new from scratch. Or is there a better way?</p>
  
  <p>The last thing is I will have to maintain this page and I have not much knowledge in templavoila. I also understand extbase extensions much better than pibased ones. But the time difference between keeping everything with pibase and templavoila and creating the whole page from scratch is months.</p>
  
  <p>So I am not sure which way I shall suggest. What are your experiences?</p>