I copied a whole page of Notes to move it around. Unfortunately I had too much confidence in this product and cut the page out and pasted it in on another page, afterwards the programm crashed and it only saved the the document where I cu the page out.
What you can do better:
1. Do version control (back ups), since everyone has sensitive documents and notes they cannot lose.

Secondly I wanted to import the old file (my backup) and I couldnt continue working on it because GoodNotes recognized it as normal pdf.
2. Add so you can save the files on your own computer and continue working on it with importing the file later on

Thirdly I added some Pictures and moved it around. I exported my file as a pdf but unfortunately some pictures and also some handwriting covered my whole page but it didnt appear in my GoodNotes file. So the pdf just interpreted some things in which werent there. Also the screenshots had borders around it which they obviously didnt have on the file in GoodNotes which I was working on.
3. I dont know if the new update did this but I think its not such a big deal to fix this bug since some updates before the pdf export function was working just fine.