Hi nickgin ,
Sure, I get where you are coming from.
I want to clear things out first, please, understand that the free ATUM was created for small size shops first and we have added features in as they were requested by other users (such as purchase price, suppliers etc.).
Since the beginning, it was clear to me that not all users will find ATUM useful right away. Large shops would have many setup issues or maybe speed issues.
At the end what I want to achieve is a complete business solution, however, with my limited resources it will take some time (I expect +4-5 years). Export and Import was something I wanted at the beginning and so I can guarantee you that is still the case. Both of my devs are currently working on completion of this addon and we hope to release the first demo in a few weeks. Full import export I hope to release end of July.
PS: very important to tell is that it is not just a simple export-import, but a very advanced add-on. I will now share some images with you. Please, note this is the original design and the final version may differ slightly.